Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b7065d54b8fe62…

MALICIOUS

PDF

71.2 KB Created: 2021-03-22 06:58:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 59265214df2be66e9cf01f5145fb8f6f SHA-1: b1b3ea1c9b686154444a7b4dcff42e4835fa7052 SHA-256: 06b7065d54b8fe62ddc13cb2d97fcdee09079ff98e4f8d9889e4a55a692c2fc1
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/strik?utm_term=2002+toyota+tacoma+maintenance+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475570/normal_5fe93dfe1a101.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469105/normal_5fde615a08e87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366949/normal_5fd0e342c9dd3.pdfIn PDF document text
    • http://tolumibawaka.iblogger.org/48337591303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473039/normal_602f16b7e2ee9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/28d873e0-b882-4475-9f4e-01bf1966ae04/wevoma.pdfIn PDF document text
    • https://7f3356c1-ec1f-498a-9d41-5b36c14d87b7.filesusr.com/ugd/98d33d_7b8db673fb654c188af59f39d872c7bf.pdf?index=trueIn PDF document text
    • https://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_13c51527fbf0482d93f9a77f0733d3dc.pdf?index=trueIn PDF document text
    • https://5e04165b-6ab1-49a6-9937-45006fc2fbeb.filesusr.com/ugd/d19879_417c71b8579c4eed82afe2f6f5703316.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wurivuve/puxub.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/lemosuwi.pdfIn PDF document text
    • http://xaposekesudonod.epizy.com/71428095544.pdfIn PDF document text
    • https://bac325b5-3710-4a60-ba01-c1ac5e8a7650.filesusr.com/ugd/c111de_26ab77583d084603b26de931cb5270c8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3c56b83-f6c6-4aca-8f1c-0ea1a053a7d1/dell_optiplex_gx620_sound_drivers_for_windows_xp.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/swiggy_app_for_pc.pdfIn PDF document text
    • http://nikofutame.rf.gd/gavelenotupedixudoloroser.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cee9a050-ad8f-43a8-8317-964036bc775b/how_to_repair_a_viking_refrigerator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab630ffe-7e4e-48aa-a3a1-cb2b1826f10a/zizidenezomerop.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/libewawitedukovojafix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e7b5d9e-246a-4648-93dd-9133a928a7d4/87720497232.pdfIn PDF document text
    • http://mufomasugom.epizy.com/45820647193.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/notepuxoribaxezomizixe.pdfIn PDF document text
    • https://0b7b936c-93ac-4a60-9644-6ba220b934cc.filesusr.com/ugd/b4bf80_82dec5669f164d77985248187ef2c30a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/025b9704-9071-4ac5-9a8a-5980592507f7/writing_with_style_third_edition.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4E 4952 bytes
SHA-256: 277911603c74bed57674e81eaeacdb87f2dd8d82a9b8bdb536c99eafa4716fd0
font_01_sfnt_off0000eb20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB20 10072 bytes
SHA-256: 0cf4468062d5eeaf1c873f9743dd055b0c87b8b52fcdc682ce7e74c8ef20c83f