Malicious PDF — malware analysis report

Static analysis result for SHA-256 875dff9aa9f46194…

MALICIOUS

PDF

104.4 KB Created: 2021-09-13 00:57:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: ede3256c4caa80dc3a0d22402ff00580 SHA-1: a67ebd8cad1a688227ffe93a47061d52e2b3bbeb SHA-256: 875dff9aa9f461949ff922968a79aa02fa363cb8f2f008875e994b90b2a64138
181 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 7

  • 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 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://bsp-plovdiv.org/ckfinder/userfiles/files/likikasobumonera.pdf In PDF document text
    • https://www.kuwaitpolyurethane.com/ckfinder/userfiles/files/70480350092.pdfIn PDF document text
    • http://hiace-yoshikawa.com/js/upload/files/11247705427.pdfIn PDF document text
    • http://vitali-schulz-eiskunstlaufen.de/userfiles/files/fegurufivozuwotaku.pdfIn PDF document text
    • http://hamzalegalservices.com/userfiles/file/xosimelef.pdfIn PDF document text
    • http://letsfinal.com/userfiles/file/fivodanasi.pdfIn PDF document text
    • https://gberwanda.com/gbe/useruploads/blogs/files/kiwupasafakijetebolo.pdfIn PDF document text
    • http://santehnika34.ru/images/file/soxufa.pdfIn PDF document text
    • http://kapelski.pl/userfiles/file/nowuk.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/5mj8rmh266r0jv144spoghdtg2/riboragij.pdfIn PDF document text
    • http://studiotecnicofrisoli.com/userfiles/files/49095733813.pdfIn PDF document text
    • http://sahcarpets.com/userfiles/file/93708024251.pdfIn PDF document text
    • https://thietbixanh.net/uploads/files/95096299757.pdfIn PDF document text
    • http://instant-image.net/UserFiles/Site/File/kojadopizurobuxuroxo.pdfIn PDF document text
    • http://aranykoronakft.hu/userfiles/file/jilazoliporejifofiwerizob.pdfIn PDF document text
    • http://dalieuht.com/app/webroot/uploads/files/suvozot.pdfIn PDF document text
    • http://dhf-china.com/d/files/livemezivamijinapo.pdfIn PDF document text
    • https://hlj-vibration.com/uploads/image/20210912/files/20210912192835.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/egk0e9q3eukep0qmnctbet7acq/nonininanirutefotutore.pdfIn PDF document text
    • http://sokole-tps.pl/userfiles/file/fezunitomarekigojiw.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2826c0c10fe4fadb95114c52b18057a0/29088273983.pdfIn PDF document text
    • https://latgalesamatnieki.lv/files/file/56587279873.pdfIn PDF document text
    • http://wwpokebar.com/uploads/files/gowifamew.pdfIn PDF document text
    • https://carpenterstouchnj.supremeroi.com/FCKeditor/file/mimasowijoburifijogak.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=ideas+for+math+iaPDF 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_off00013350.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00013350.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13350 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B62 19120 bytes
SHA-256: e12e4c95e9bc280a4d1dd6f60262f72a3a536cef54a7eb4f0a047a5feaef4da2
font_02_sfnt_off00017ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17CA8 10420 bytes
SHA-256: 5904ff43a9c1e1268bdbb2904b7876d1dae0ebdea375dc0c4bdfd776639bb894