Malicious PDF — malware analysis report

Static analysis result for SHA-256 172a9158b89d5b69…

MALICIOUS

PDF

65.9 KB Created: 2021-02-07 01:04:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6d5dfdd1b1a1c27d487e4dcb512ba3cd SHA-1: 71c68c05e950349bb78fd60a9055d362abec2589 SHA-256: 172a9158b89d5b696d97c018fce45c1374da2e146e41028b7bf596ed2bc95c3a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/wb?keyword=anaconda%201997%20hd PDF link annotation
    • https://demifezi.weebly.com/uploads/1/3/1/3/131379940/sagunan.pdfIn PDF document text
    • https://cdn.sqhk.co/gipirukanut/vgfheAD/dujutogedijofezejeli.pdfIn PDF document text
    • https://mazerobuwi.weebly.com/uploads/1/3/1/3/131398334/5290711.pdfIn PDF document text
    • https://tuvitewolejuxow.weebly.com/uploads/1/3/4/6/134615754/zebepexapirir_kokesowe_mafejuzirif_bazojexuzesibuf.pdfIn PDF document text
    • https://cdn.sqhk.co/pesenexur/i8DQtjd/56897120360.pdfIn PDF document text
    • https://cdn.sqhk.co/wixakulu/MjaNihO/baby_growth_chart_boy_percentile_calculator.pdfIn PDF document text
    • https://cdn.sqhk.co/samekikogeri/TBhiji7/lost_at_sea_game.pdfIn PDF document text
    • https://bivesazi.weebly.com/uploads/1/3/4/6/134652180/c64624.pdfIn PDF document text
    • https://cdn.sqhk.co/vabilafibalu/cmjhNhb/gawejosolepizabelek.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/ijfzgg7/zuby_questions_and_answers.pdfIn PDF document text
    • https://nedixizudunosil.weebly.com/uploads/1/3/1/4/131483200/zenajug.pdfIn PDF document text
    • http://zuluwana.iblogger.org/boogie_board_sync_android_app.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/VHqrlif/zikopikel.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/3082911.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mizebowofaz.epizy.com/zumuxavalifejubuzuxulus.pdfIn PDF document text
    • http://desakoda.rf.gd/teraguwexolum.pdfIn PDF document text
    • http://wafibajew.epizy.com/free_printable_2020_calendar_templates_with_holidays.pdfIn PDF document text
    • http://remigesej.epizy.com/agreement_form_for_payment.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_off0000c55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC55D 4996 bytes
SHA-256: e55fd31f038a08072557cd3ff6336171468e9779f5a1b0e2ba4ccfebef67b2b9
font_01_sfnt_off0000d66d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66D 10748 bytes
SHA-256: a2c8c55bae383fbecc86347d1b4b02e8005445a3a9eaf28b6f7a8bb99fdb5f9f

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