Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e0abb139bac590…

MALICIOUS

PDF

87.0 KB Created: 2021-05-14 05:56:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 05814b3beda26bd0a576aa6a5f67f563 SHA-1: 5358e659d6743e3e485e8a1438a98c88990510cd SHA-256: 63e0abb139bac590a0fd24aa1f0556cc3d199b75d3bb6c0462b6f67ba46eff44
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9995

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://pelibifir.ru/strik?utm_term=francisco+vazquez+de+coronado+history PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392871/normal_5fd1fadcbadfa.pdfIn PDF document text
    • http://potenciy.xyz/wikewafoflyr.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/explain_what_is_meant_by_sociological_imagination.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422382/normal_5ff66302db6c6.pdfIn PDF document text
    • http://seomagnat1.online/10959102677rhq6v.pdfIn PDF document text
    • http://photoforce.ru/217965251o3c1q.pdfIn PDF document text
    • http://kikifikoxije.mypressonline.com/84858907173.pdfIn PDF document text
    • http://regvoolkim.website/54603580239y4oyh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412763/normal_5fed9f5b75a65.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://5c09c65f-4728-49e3-9562-8692e696fc4f.filesusr.com/ugd/32acb1_cfe74eae61704209bdd09b152e440513.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xarojapi/how_to_lose_weight_eating_plant_based.pdfIn PDF document text
    • https://0cc2a7d0-6f33-4335-9ec9-554d9418487e.filesusr.com/ugd/cb4a18_5930e75d1bb44fa598bf36ccf43fa0a8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lusabifef/somixiti.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/28753335913.pdfIn PDF document text
    • https://1a441fb4-51dd-4528-a053-eb59ff664e18.filesusr.com/ugd/43d9d5_9486323f1973405aa60bc682682057e1.pdf?index=trueIn PDF document text
    • https://f0f855fd-29d2-4bf6-9fdd-af1de8d1f91d.filesusr.com/ugd/184831_ae7fedc34c2d4e50bc5811efa79ccc5b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/98752019717.pdfIn PDF document text
    • https://5de6e22f-064f-4859-b003-4eaa502c5056.filesusr.com/ugd/2609e6_e81c265efc6345bc80c8f9b1345d80ee.pdf?index=trueIn PDF document text
    • https://7648721b-06f4-4917-9c2a-921156fbbd07.filesusr.com/ugd/a7266c_21afbb7cdebe417aae15bb4c7f594b03.pdf?index=trueIn PDF document text
    • https://0b7b936c-93ac-4a60-9644-6ba220b934cc.filesusr.com/ugd/b4bf80_b14ab9b46c1e4ea2bdeedfe8ff13e464.pdf?index=trueIn PDF document text
    • http://vigexosav.myartsonline.com/wenizatijale.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/logo_modernism_free_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E6 5168 bytes
SHA-256: 4fc1d65fc6b7b0c40f41411af7ee48b7def48d736fd65ac629bc0ae286b77d60
font_01_sfnt_off00011777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11777 11952 bytes
SHA-256: 6684e80f9d15c292011ce6cabfb5aa7368847f5eafa0efbb7e8950207af9b184
font_02_sfnt_off00013e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E3D 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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