Malicious PDF — malware analysis report

Static analysis result for SHA-256 899a83277942cef9…

MALICIOUS

PDF

73.2 KB Created: 2021-02-25 09:57:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f6949bc0b80b83553653c0425f193eda SHA-1: c2dea1cf2182a09149c306f0db66a795511dae1d SHA-256: 899a83277942cef971f03cc11ced3198fba74825b53e44a1f0e5f819f1b344d0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/award?keyword=beatles+yesterday+easy+piano+sheet+music PDF link annotation
    • https://cdn.sqhk.co/soribivevi/hijl34J/51405948500.pdfIn PDF document text
    • https://bowutemol.weebly.com/uploads/1/3/4/2/134234741/e90b91b5735251c.pdfIn PDF document text
    • https://cdn.sqhk.co/letopoto/hghezhh/47127963248.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/gohaZif/25231428786.pdfIn PDF document text
    • https://xuduwenonotowud.weebly.com/uploads/1/3/1/3/131379268/tarubikelova-walix-rakavowipugixu.pdfIn PDF document text
    • https://dovezoluwebib.weebly.com/uploads/1/3/4/0/134017866/2402197.pdfIn PDF document text
    • http://parralax.net/aye_re_bondhu_ay_video_songb42n1.pdfIn PDF document text
    • http://epipog.com/87122705022ihat4.pdfIn PDF document text
    • http://avtovishki-msk.ru/sharp_aquos_remote_ga759wjsa_manualfse1u.pdfIn PDF document text
    • https://gazuxupoje.weebly.com/uploads/1/3/4/1/134108966/mebapofufut_tuziveviwe.pdfIn PDF document text
    • https://cdn.sqhk.co/talexadu/ZL3he9U/74672290867.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/d8232.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/dojivewobasuval/venomous_snakes_in_india.pdfIn PDF document text
    • http://xijivat.rf.gd/algebra_and_trigonometry_structure_and_method_book_2_teachers_edition.pdfIn PDF document text
    • http://fewetero.epizy.com/household_budget_template_free.pdfIn PDF document text
    • http://napipipazapuka.epizy.com/motexeruz.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/kidde_battery_operated_carbon_monoxide_alarm_manual.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_off0000e2eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EB 5464 bytes
SHA-256: 620c90ded5f98cd75ffe741e3121b71b0aaee1bc11c26383015f911bf040132c
font_01_sfnt_off0000f55e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55E 10052 bytes
SHA-256: 02a99a19ee2052a9c937c0b2d373acad1103ffd207c5d7140e0aed8d95a72c7a