Malicious PDF — malware analysis report

Static analysis result for SHA-256 e200b606aec731fa…

MALICIOUS

PDF

72.3 KB Created: 2021-03-20 08:06:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6cc7ad78ba65bed08ca3cc8c2769c490 SHA-1: 98ff8a80426f74846d533283a8d6ecd42f0afad5 SHA-256: e200b606aec731fa27189e981a299666ba935933be5ee89ea4c9725eb498f96b
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://midufefew.ru/123?utm_term=utorrent+free+32+bit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409122/normal_60044658705f7.pdfIn PDF document text
    • http://weviwoza.22web.org/functionalism_vs_conflict_theory.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486742/normal_604718697c475.pdfIn PDF document text
    • http://perfectiona.online/silence_book_review_natasha_prestonc02xb.pdfIn PDF document text
    • http://vikidavilor.22web.org/bheema_song_ringtone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375071/normal_603657a86e55c.pdfIn PDF document text
    • https://cdn.sqhk.co/vojofarakiva/bXgdqgg/ludo_king_tv_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368245/normal_5fc5bc1613ed1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379970/normal_604b9fbd92e8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411931/normal_603b955c54208.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476142/normal_60296c1a4e675.pdfIn PDF document text
    • http://dress-russia.ru/rutedebupagero587z9.pdfIn PDF document text
    • https://cdn.sqhk.co/fepixuzutol/zjdVjhp/parliament_limits_the_english_monarchy_worksheet_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/gdSIAgj/general_knowledge_quiz_questions_and_answers_2019_uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407777/normal_5fe7c8a4e7d84.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/bahubali_2_full_hd_images.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/45664981493.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/71756100796.pdfIn PDF document text
    • http://suwepedufaresi.epizy.com/61486864893.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/backtrack_5r3_apk.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_off0000dc83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC83 4768 bytes
SHA-256: 88da04df8abbd5daa677692d0b276c0047600cfc70906525425015601a3563c3
font_01_sfnt_off0000ecd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD7 12640 bytes
SHA-256: 040f04e955a718e0fc9665c47c21eff1be0691a9a6e49699117a1c545f88287d

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