Malicious PDF — malware analysis report

Static analysis result for SHA-256 73087ad287647095…

MALICIOUS

PDF

132.8 KB Created: 2021-06-27 02:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: eea838f03c8dbae0642cc0852d6e777a SHA-1: 62ff966f0107cff925233dedbbc31aece712c102 SHA-256: 73087ad287647095fb64c01158c3aafa5f61d1f64aa0ece0597ebcf0003f7d6a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with numerous URLs pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9916

Heuristics 6

  • 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.
  • 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 https://cgeminfos.ma/upload/file/xalofaxewapalebuvuta.pdf In PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c98a0638f5---gutitutolokezokenesase.pdfIn PDF document text
    • https://itchanoi.vn/uploads/news_file/veveme.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/j35put2ke3oaejnhcq3n3lqqac/nagejovewujufaxetavij.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/75947803149.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/00873611c6d33cef80d3971c96a01423/xemefija.pdfIn PDF document text
    • http://abwessex.com/uploads/files/xozazajupavelefapawav.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160904d7d5a857---52810256834.pdfIn PDF document text
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/29e2e4e76f9ebb0e9bb1bab26cc4f7bf/44343982122.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6931342c92---davezabamesavexudalukine.pdfIn PDF document text
    • http://kapelski.pl/userfiles/file/40064972001.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bf520013dca---7948367314.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c4e194fe7---tepino.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608d39732d2d5---963721437.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/ejv5rodt0bjhm1qonlv2577uh2/riweraluwukasi.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/fn29tqbki38tea8qtpephijp0u/zufute.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077b1f3eabb1---pesemetujixafigi.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/6uhgc16das7lg8njm58b9vh7mb/kerebova.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1609f209c4f681---33217692821.pdfIn PDF document text
    • http://ylphs.com/ckfinder/userfiles/files/74069885704.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a604d533c63---vazunateku.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/e29588514fd369eedc344fb75e7f18b0/93171534736.pdfIn PDF document text
    • http://khangvietdn.com/uploads/file/jefim.pdfIn PDF document text
    • http://abwessex.com/uploads/files/32122574725.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=tale+of+two+cities+full+text+pdfPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7B7 10660 bytes
SHA-256: ada7cc3c4f0949661681e65df59216ea635d20eda0d175c2c56c841871443484
font_01_sfnt_off0001c062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C062 18036 bytes
SHA-256: 84710f925b55a14defa0ae8e7b1f3a0c1eb67a06af754ad99107a5d4de038bed
font_02_sfnt_off0001ee96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EE96 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1