Malicious PDF — malware analysis report

Static analysis result for SHA-256 739112e9802cfb6d…

MALICIOUS

PDF

77.7 KB Created: 2021-07-09 03:21:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 403988617a80d6d106ced08d976d9196 SHA-1: 579e937c97dea27dbe7643a42623882c11245ab0 SHA-256: 739112e9802cfb6d3fbccacc67e764e1f1873ba21607c7d736785fef85c89ca6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains a large number of embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9829

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://oniceh.ru/uplcv?utm_term=ralph+griffith+rig+veda PDF link annotation
    • http://mobilephleb.com/clients/2/2d/2d2188d13063160162e6e2bbcdac547d/File/kogesuvivokuwosa.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16087315ab6be8---faruxowajavof.pdfIn PDF document text
    • http://cosmic-kino.ru/sadm_files/17985399585.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/015f85f44696f58ed501d31b8041ebb4/66791609461.pdfIn PDF document text
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/d30b5a69f72a927d25af669defae50e3/rawivakejufimez.pdfIn PDF document text
    • http://yossy.biz/userfiles/file/37604675810.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/mvg314gjsei08g9tucha4s0pru/99579588491.pdfIn PDF document text
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/1a30742bc2857c2ab0041642d8239a7a/tafabanufagamu.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/welefovowixuguguzofisedu.pdfIn PDF document text
    • https://salvatoredivilio.it/userfiles/file/nuwiwomugi.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb474dc6b6---60699416053.pdfIn PDF document text
    • https://p99.tw/pro_pic/files/fekukigevobuvimeridefegew.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/713857348.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/ao0u7gdq487oqur2e6m9une4u4/97516251334.pdfIn PDF document text
    • https://aashianarealty.com/file/73129153823.pdfIn PDF document text
    • http://jr-bang.com/uploadfiles/20210701132119.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/3pc3h8ja6ql99mgmv53e5htf0c/39484474545.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160a444b723758---15165744925.pdfIn PDF document text
    • http://hoangminhphatkorea.com/webroot/img/files/81444555658.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/cde052340a2c6632ba346971b0c4f30e/71295766173.pdfIn PDF document text
    • http://ghalemdi.com/userfiles/file/50566679702.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/3f4750ab862286eb706fb1e62ee2268f/47021937878.pdfIn PDF document text
    • http://rajskiewakacje.pl/userfiles/file/jawosavonifevutimonugu.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160afd72de698d---bebunupamumi.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe30768c17---71321904239.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb7a4ac660---ledamodilasujubofuk.pdfIn PDF document text
    • 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_off0000ce44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE44 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE656 16724 bytes
SHA-256: 300d390fc487419f0bbd153dbc3bf51eeff466cf8924763acc0b5a1956984125
font_02_sfnt_off00011192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11192 10496 bytes
SHA-256: a2ccfb86ba5c1251e5dd31573694dc61409185a525b13cc693417d2ead68bbef