Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db39f2207991559…

MALICIOUS

PDF

81.0 KB Created: 2021-02-28 19:26:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7fb71285d7772a6f2a7ea2dfb9ba6b2e SHA-1: 3518589f3f176c54e7c6f583f34c3855f9679de8 SHA-256: 9db39f2207991559ce1fa9e413d1e13a68a11d27a3d5558406d719a3ef31b922
126 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The document's metadata and body text, though partially obfuscated, suggest a lure related to "Legion gear guide", likely a pretext to encourage clicking the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=legion+gear+guide PDF link annotation
    • http://hookup158.fun/blue_red_white_background_templateh33b2.pdfIn PDF document text
    • http://alex-travel.moscow/seveponutonufudujelazudo0f55t.pdfIn PDF document text
    • http://soinjaga.ru/utopia_season_2_review4yjoz.pdfIn PDF document text
    • http://alex-travel.moscow/gta_5_money_cheat_pc_offlinesfr16.pdfIn PDF document text
    • https://cdn.sqhk.co/kominepoli/XMtgfg6/rounded_corners_or_square_corners_web_design.pdfIn PDF document text
    • http://verification-help.business/984374338643hdep.pdfIn PDF document text
    • https://cdn.sqhk.co/rozesivotix/tibjgji/crandon_off_road_races_2020_results.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500679/normal_5fde5f7f99be6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371807/normal_5feb0cce53d72.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/gggfgej/31911533928.pdfIn PDF document text
    • https://cdn.sqhk.co/kamavedes/GhaN69M/daberupuwitusekagakumum.pdfIn PDF document text
    • http://wojifos.22web.org/kapuwekugamidopupat.pdfIn PDF document text
    • http://liko-sneakers.com/ipod_mini_touch_chargerzeqot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kofezinidabefu.epizy.com/lerapafajigo.pdfIn PDF document text
    • http://mikugux.rf.gd/nodimejegitidozuke.pdfIn PDF document text
    • http://mezujegaweb.epizy.com/57944005455.pdfIn PDF document text
    • http://vokuwomibaneseg.epizy.com/fungsi_sistem_informasi_akuntansi_menurut_para_ahli.pdfIn PDF document text
    • http://kotutuvotijol.rf.gd/atwood_furnace_part_31501.pdfIn PDF document text
    • http://nitesegu.epizy.com/13326879041.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_off000102e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E4 4724 bytes
SHA-256: 8a313143be23757c2e81f7ec44ab73dd70676b401c3411d66f09d02763c48e8c
font_01_sfnt_off0001130a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1130A 10604 bytes
SHA-256: d60eb356759a5aad055b4a1bda8fc4f4df8234182ae03fd1db3ab1d28b4ec503

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