Malicious PDF — malware analysis report

Static analysis result for SHA-256 079e4e77e797e498…

MALICIOUS

PDF

85.8 KB Created: 2021-07-03 11:13:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: add821d5556af549d2d72cf444e1fb6a SHA-1: 7a52956c4a48995c703f879a0655050ee1216541 SHA-256: 079e4e77e797e4989f570fda3417264550247710479cf9f5120a3af6d91b3759
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm pointing to multiple websites, many of which are hosted on compromised WordPress installations. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates these links are likely used for SEO manipulation or to direct users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/2b23df2f24e8784d05bbb165fe0197db/fewebepaparimixemavuv.pdf In PDF document text
    • http://vivaibonomo.it/userfiles/files/13040619167.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160922ba7ed15e---metapib.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/kgjc8je0r20o7fn4bdmmr52mt5/52362063827.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/c4du3q1mt7knpnu8k023jk9o96/pizinelapalidezeba.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a24301b03a9---52550879486.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/3u7jt15lqhr1a4glvl8gen6h46/ruxasez.pdfIn PDF document text
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a500096bac4---35955722415.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/fudebolodupofukug.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/6c3ce1c8af03ada80cd7a1fcc909822b/fadebusakikiki.pdfIn PDF document text
    • http://vidol.nl/userfiles/file/dovenujogilesi.pdfIn PDF document text
    • https://soosekszer.hu/upload/files/xuzejidegavolojatemajalan.pdfIn PDF document text
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/2409960cb601acadfc867d7f2bc49cad/birusafodizilaga.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/bf90f24612840ccab3e6edb259b22ab9/jujilekanijefab.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160848da05dad3---87234072734.pdfIn PDF document text
    • http://www.ecostroyservis.ru/File/sagusufujolinut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=7+perspectives+of+psychologyPDF 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_off0000ec72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC72 10624 bytes
SHA-256: e186cc78afeb9f14d7deb9ab831acfcc90dbe53cb5f8c6e6794ded0d8040dffe
font_01_sfnt_off000104f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F4 17992 bytes
SHA-256: c2304513aae006de891642192bd3da0f6ed716410f3899521e4e933e92d18834
font_02_sfnt_off00013293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13293 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1