Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de1ab268bd4ba1e…

MALICIOUS

PDF

80.4 KB Created: 2021-03-28 17:14:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 25f82bd610cd622cf36b5cfa3ffa9f62 SHA-1: 32d83a9c862a4be4f0691ece840afb8e0d104770 SHA-256: 0de1ab268bd4ba1ef4ca2850b75a76ac8258ae38e0e1143fe88ec0218b8ad7ed
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many of which point to disposable hosting or domains associated with link farms, suggesting an attempt to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and numerous external links indicate a likely intent to deliver a malicious payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/strik?utm_term=ford+3000+tractor+power+steering+gear+box+diagram PDF link annotation
    • http://ultra0.space/survival_horror_zombie_shooter_gamep1lhx.pdfIn PDF document text
    • http://rusakadovub.sportsontheweb.net/genupesifunetibozukinap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376105/normal_5fe4d1691830c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_6011dc343ac45.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/dupebutedepi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369904/normal_6032d3486675a.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/bloons_monkey_city_music_downloadqjzo3.pdfIn PDF document text
    • http://diporesorojina.scienceontheweb.net/how_does_globalization_influence_business_communication.pdfIn PDF document text
    • http://budokudepa.scienceontheweb.net/how_to_connect_polk_signa_s1_to_tv.pdfIn PDF document text
    • http://arfeshome.com/which_university_is_best_for_data_analyticsj6bsq.pdfIn PDF document text
    • http://psylath.com/d2_best_hand_cannonsy5ymb.pdfIn PDF document text
    • http://wozuxel.getenjoyment.net/polewemid.pdfIn PDF document text
    • http://fishland.store/28169144077p5x42.pdfIn PDF document text
    • http://greatholl.com/28792809046xug36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457582/normal_6034f341b73a4.pdfIn PDF document text
    • http://dafitunexen.iblogger.org/mewagemopopolizuxa.pdfIn PDF document text
    • http://winfreeiphone.xyz/82382197295g9jyc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jowokepo.atwebpages.com/metal_gear_solid_4_ps3_cheats_eingeben.pdfIn PDF document text
    • http://tajorusogujadot.rf.gd/bekebikamofusosup.pdfIn PDF document text
    • http://jamivofobo.rf.gd/2004_honda_rancher_350_tie_rod.pdfIn PDF document text
    • http://xemigososefof.atwebpages.com/how_many_amps_does_a_minn_kota_trolling_motor_use.pdfIn PDF document text
    • http://mitefunigesito.rf.gd/borosilicate_glass_sheet_canada.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_off0000fc5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5D 5920 bytes
SHA-256: 8aa65e65c89901cb620387cb618cb5ab948c53bd4651908208376ddbf316e591
font_01_sfnt_off0001108a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1108A 10408 bytes
SHA-256: 72e5c75ff95321a6df3e8777232285268d562b6350abe537491deff7ac341b12

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