Malicious PDF — malware analysis report

Static analysis result for SHA-256 46902aa6de46ae4f…

MALICIOUS

PDF

90.2 KB Created: 2021-07-23 10:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: d72726949b446ef7bea466224d5f558e SHA-1: 4e23eebe6d0854fb6a20e0bb93c9311b1846f90d SHA-256: 46902aa6de46ae4f7dd026b889842278cc8c1aef0ee1b249cc8bc497d939dea1
156 Risk Score

Malware Insights

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

This PDF was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised websites, including those hosted on WordPress upload storage. The presence of numerous links on disposable hosting further supports its role in distributing malicious content or conducting phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 http://limeitec.com/upfiles/editor/files/tawefa.pdf In PDF document text
    • http://drapa-technika.cz/UserFiles/File/sariremazo.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc34c581dd9---94059184529.pdfIn PDF document text
    • http://czytamzezrozumieniem.pl/userfiles/file/75573092732.pdfIn PDF document text
    • http://galgalesh.com/userfiles/file/wodurevugotagesodij.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/10798624983.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16098f804daeed---tujudabipuvukereb.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa970c5099---42926173938.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/7gfj8fr0pej4jf297sgvul6st1/60771282928.pdfIn PDF document text
    • https://justbuymeds.net/userfiles/file/junaminuzegaxamejogunire.pdfIn PDF document text
    • http://suachuabaoduongmaynenkhi.com/img_quanganh/files/mofuvebemolir.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/idijjv9504675gn4lkqs57g7nr/puribu.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/790319eb296970d4e6b1ff93a88bd7ca/vepopina.pdfIn PDF document text
    • http://wphs69.com/clients/1/13/13dd0a1135c99f886ff4006aa3c820ba/File/xutatajorubamujeja.pdfIn PDF document text
    • http://chokmanee.com/userfiles/file/lagopesade.pdfIn PDF document text
    • https://2ruoteexpo.it/ckfinder/userfiles/files/5513518114.pdfIn PDF document text
    • http://roocenter.ru/upload/file/37708876491.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/lkbf21m7inpd3loquqb4jdi8gd/30294234199.pdfIn PDF document text
    • https://proia.bg/userfiles/file/58863989782.pdfIn PDF document text
    • http://nbpcpentecostalchurch.com/clients/65183/File/41805104905.pdfIn PDF document text
    • http://toyteepee.com/uploadfiles/file/210622110525485838mdsitp.pdfIn PDF document text
    • http://parkety-patemal.sk/files/file/sawugukonapowajomuruguwow.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=buffalo+chicken+dip+with+frank%27s+hot+saucePDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF986 17892 bytes
SHA-256: 7c91e038a2f8e616698c4a10af9129e0e11ab325e7f19665021b56699bf1c097
font_01_sfnt_off00012882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12882 11080 bytes
SHA-256: 73c1ac2496bf9023a854f4fa49886c97df87621860526c84aa0e949433cbd535
font_02_sfnt_off00014267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14267 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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