Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ff70460d5135fa…

MALICIOUS

PDF

80.1 KB Created: 2021-04-27 01:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ee93b91cf0859650c4b471ea43f3cba4 SHA-1: da922438116f1382b087948ba4765c2ce16148dc SHA-256: 75ff70460d5135fa8f5bf5c7ab7186cfb398215500b2e31483e997f102793816
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 0.9992

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://lozipotod.ru/strik?utm_term=how+to+troubleshoot+dell+desktop PDF link annotation
    • http://whalesqpa.fun/95233958524tzays.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvesanap/hebhhtk/62954685100.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/jdgjShc/49311184008.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/eibjiRI/virus_protection_for_ipad_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/pefatipi/LZtwjfh/roommates_for_apartments.pdfIn PDF document text
    • https://zujuwedidikaf.weebly.com/uploads/1/3/4/3/134375258/jowiduzu.pdfIn PDF document text
    • http://powezikunuzumi.iblogger.org/gcse_english_exam_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/xgxfjat/word_cookies_answers_mocha_10.pdfIn PDF document text
    • http://vovadot.22web.org/butosufab.pdfIn PDF document text
    • http://shlifovka-pol.website/96745772282qlha6.pdfIn PDF document text
    • https://ropexosuwewi.weebly.com/uploads/1/3/1/3/131380205/691666b75ef055.pdfIn PDF document text
    • https://zadilomevesijob.weebly.com/uploads/1/3/4/5/134581884/tufefusibemit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jinixoxugud.rf.gd/be_alright_ariana_grande_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60ba96e4-556a-477b-ba0b-763f1004361c/baxugadesusogefewiwax.pdfIn PDF document text
    • http://dodupubi.epizy.com/18382132868.pdfIn PDF document text
    • http://pizidera.rf.gd/airline_codes_in_the_philippines.pdfIn PDF document text
    • http://kikexufan.epizy.com/whatsapp_for_htc_chacha.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/900c3ef0-7347-4a02-a44c-6e6ca8e7f6db/jomemepebidifipam.pdfIn PDF document text
    • http://potelodifudoduj.epizy.com/vw_tiguan_dsg_gearbox_oil_change_interval.pdfIn PDF document text
    • http://dopesesowo.epizy.com/android_app_creating.pdfIn PDF document text
    • http://jilabof.epizy.com/metformina_clorhidrato_850_mg_montpellier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/832d52d6-a06a-4778-92a5-69b8384b8cb3/bissell_powerforce_powerbrush_not_turning_on.pdfIn PDF document text
    • http://foduwisidowej.rf.gd/westworld_full_soundtrack.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_off0000fcb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB0 5092 bytes
SHA-256: 9f22e44ac66313e0644527c769c3475bdd02657fdb9ed3a95952e68367ff9905
font_01_sfnt_off00010e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E00 10692 bytes
SHA-256: 6c03feb4544414369e2cebe788bf15bc901edd5b0a8954467c42bd037c5abac7

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