Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf699b2ac196056d…

MALICIOUS

PDF

78.3 KB Created: 2021-03-27 14:09:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 303aab06e670c24a23db50850b059acb SHA-1: 32656264e416a6ea1c3cdba28992d5836c654c3e SHA-256: bf699b2ac196056d520fb0f40243277a3a74fe9485d75a86d4fbd5578319c4a2
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 0.9993

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://fokemale.ru/wix?keyword=backcourt+violation+fiba PDF link annotation
    • http://evilcheats.fun/summarize_the_goals_and_actions_of_the_jacobinso6tjt.pdfIn PDF document text
    • https://cdn.sqhk.co/zotenejek/g6iijge/division_3_football_playoffs_2017.pdfIn PDF document text
    • http://importants.space/kozerimublg576.pdfIn PDF document text
    • https://limifotediko.weebly.com/uploads/1/3/5/3/135325738/6822527.pdfIn PDF document text
    • https://zejewovelopitut.weebly.com/uploads/1/3/0/8/130813539/7778134.pdfIn PDF document text
    • http://popularchoice.space/227291029158jv5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426571/normal_603026546d211.pdfIn PDF document text
    • http://axecheat1.xyz/how_to_see_who_login_my_facebookhcqv8.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/gg9xyQQ/11396537381.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/5jeRij9/71088010016.pdfIn PDF document text
    • https://letateworu.weebly.com/uploads/1/3/4/3/134365764/e3d9641c267.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386081/normal_602a254d00213.pdfIn PDF document text
    • http://casbah2point0.com/48130227766iboza.pdfIn PDF document text
    • https://rujijixagav.weebly.com/uploads/1/3/1/3/131383475/kegafopafinu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392854/normal_60358661a3382.pdfIn PDF document text
    • http://smotrikino.fun/best_4k_gaming_wallpapers_for_laptop6dxx9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415524/normal_603c8ae3abe00.pdfIn PDF document text
    • http://xsafak.com/how_to_write_a_television_advertisement_script68ub0.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/f5f376f2-d91d-46d3-a463-81b8fb2b3f49/classical_conditioning_theory_real_life_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0077bfb7-ebcc-486b-99af-77de95602ee2/gobunazurelejaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/373f8a68-9286-4298-b043-7b30495960fc/geworufesazisabudidefiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c91e9284-a52d-43f2-9222-77261608e628/vimum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fa31764-5b16-479d-9990-d514c3d505e4/99426380470.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_off0000f4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E9 5012 bytes
SHA-256: 973c070d21577519e7620728b2eb9d349dbeac71da4f7c6cdf3b5be4660d61f9
font_01_sfnt_off00010615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10615 10604 bytes
SHA-256: ce10267393c6a5d07c91c6f803f126c6ea27b501f1f6299fa58de05b82b64611

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