Malicious PDF — malware analysis report

Static analysis result for SHA-256 487a1fe698943770…

MALICIOUS

PDF

182.5 KB Created: 2022-02-18 14:45:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-22
MD5: 6490ad4230c6f3c8eafb5c540fe80ae8 SHA-1: 9256072222182dc4e72d77f1d55f1fc060f408cf SHA-256: 487a1fe698943770a93d3bb6fbe92a2f77fb504d13cd42c6a5ee31a0c497ea8c
261 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9559

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://kunmobile.vn/files/uploaded/20211224/file/49262269883.pdf In PDF document text
    • http://hyeminshop.com/DATA/files/33018040494.pdfIn PDF document text
    • https://frutalmente.pt/site/upload/file/ditorokotunuxukojakoseve.pdfIn PDF document text
    • https://childrencareandliteracysociety.org/userfiles/files/39394738239.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/1618c233fa7227---45333739886.pdfIn PDF document text
    • http://avanti.pl/userfiles/file/bimosozovejem.pdfIn PDF document text
    • http://www.artefuoricentro.it/js/lib/ckfinder/userfiles/files/begaluku.pdfIn PDF document text
    • https://niboparis.com/upload/fckeditor/file/1644594366_1.pdfIn PDF document text
    • http://noithatdangcap.vn/app/webroot/uploads/files/7226498897.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161892a28db94a---57797916546.pdfIn PDF document text
    • https://beldapromosyon.com/calisma2/files/uploads/zigutisaminanexixuxi.pdfIn PDF document text
    • https://soechi.net/userfiles/file/45688853218.pdfIn PDF document text
    • http://seattledesis.com/fckeditor/file/tadaki.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/75a032cc8d11134fcc73344624c9e558/zonepuxenuje.pdfIn PDF document text
    • https://genegurumiraclehealer.com/userfiles/file/luxobetow.pdfIn PDF document text
    • http://perrymanreunion.com/clients/f/f8/f8644f0eb9578147d5589f75b8c3e300/File/jevirewiwuzala.pdfIn PDF document text
    • http://jiducn.com/userfiles/aa/file///41804682459.pdfIn PDF document text
    • http://dichvugiayphep.biz/upload/ck/files/41956584408.pdfIn PDF document text
    • http://www.colfacor.org.ar/administrador_web/kcfinder/upload/files/95693933868.pdfIn PDF document text
    • http://imhyuk.com/imhyukeditor/userfile/file/55928932072.pdfIn PDF document text
    • https://travelone.ae/userfiles/files/43827428668.pdfIn PDF document text
    • https://rdsdealers.com/ckfinder/userfiles/files/32942862702.pdfIn PDF document text
    • https://elnativocoffee.com/silver/upload/files/nezigojewuraditif.pdfIn PDF document text
    • http://perles-del-beya.com/userfiles/file/waripukefedolub.pdfIn PDF document text
    • http://pune-india.info/userfiles/file/57511545889.pdfIn PDF document text
    • https://stotex.rs/files/32309150800.pdfIn PDF document text
    • http://xn--j1aai7d.xn--p1ai/userfiles/file/tabuf.pdfIn PDF document text
    • https://sabagdasarov.ru/upload/file/8793072755.pdfIn PDF document text
    • http://www.extramas.com/userfiles/files/puwegezobakatavolenapib.pdfIn PDF document text
    • http://yjccnc.com/upload/files/60200664688.pdfIn PDF document text
    • http://5lovestartw.com/CKEdit/upload/files/78781500201.pdfIn PDF document text
    • http://businesslegalgroup.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/73842399506.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=bein+sport+apk+cracked+2017PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0002682a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002682a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002682a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2682A 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00027f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27F45 18628 bytes
SHA-256: f8689852ccf24c8d3ab851b40d9ec94d03e485eb513ad84ad0a303d08d223a05
font_02_sfnt_off0002afd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AFD7 10948 bytes
SHA-256: f4e949347f7c2783b9d05ebd5a28089609ba6fa5358c82c507c91fbf9c383e6e