Malicious PDF — malware analysis report

Static analysis result for SHA-256 09e2fb20a06d30c0…

MALICIOUS

PDF

105.2 KB Created: 2021-03-18 20:25:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3aca350eef20385d0788227dc3288ead SHA-1: 17cc5fa1811e439a25298061143c90e28566b411 SHA-256: 09e2fb20a06d30c0d5b8647a64710737cf8e5a437aa7935305ee015ff5fe4d7d
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 0.9998

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://jumiwimov.ru/strik?utm_term=martin+luther+king+i+have+a+dream+complete+speech PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387715/normal_5fe338633f440.pdfIn PDF document text
    • http://vinnipoh.space/english_101_lecture_notesln4vx.pdfIn PDF document text
    • http://localdesign.me/58053316622vwduy.pdfIn PDF document text
    • https://cdn.sqhk.co/fewibefanid/E7qgejj/hitman_sniper_2_mod_apk_obb.pdfIn PDF document text
    • https://cdn.sqhk.co/jasolizilaf/ig4idhh/wrc_fia_world_rally_championship_ps1.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/mgfiegd/xelujopaxulegenaxibala.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/7jbkMja/81661070759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485927/normal_5fd995e3aab1a.pdfIn PDF document text
    • http://navaram.online/logitech_z-2300_circuit_diagram8ss7g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451208/normal_60514df2886f9.pdfIn PDF document text
    • http://copyrightsupportforlnstagram.com/waltz_b_minor_chopin_sheet_musicr53nj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365541/normal_5ff9de90cea2b.pdfIn PDF document text
    • https://cdn.sqhk.co/mepapogivoma/gHgjhcX/fiba_women_s_world_cup_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/felinavaw/bKgeFo7/5348773297.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://uploads.strikinglycdn.com/files/ac4f6680-b923-4c40-a281-1df7f5823a03/scary_stories_to_tell_in_the_dark_cast_members.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dbd636a-7bae-4584-a6c3-b11e694de102/29665085512.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f594a6f4-3321-4b77-b550-a94a5a0eed1f/80870312444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d658913a-89fb-4d1c-8767-39e5f537805b/74561051672.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/689dd8a0-1a9b-4958-a752-375048cab9e1/78164959492.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_off00014ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ECE 5496 bytes
SHA-256: 7562990883994c9e0cc581aef8ed88eadfa4c4113a61bb2c9fcdc857b002de72
font_01_sfnt_off00016151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16151 11752 bytes
SHA-256: 1040d96563bfcebe7990087d0f96ebe460a10c58f597ec7dcd648f3569324804
font_02_sfnt_off0001895d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1895D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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