Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e8b6a1b6a5de03…

MALICIOUS

PDF

90.4 KB Created: 2021-06-10 17:22:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4285d575b664a442f24e6df1c9717c09 SHA-1: 0c80197cecf5e2f2177b242960352d217361c481 SHA-256: 30e8b6a1b6a5de03b0e67ee7ffe4716e953cc21debbac12af96cf2e14318597d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. The PDF contains numerous embedded links, with one prominent URL pointing to a site that appears to be a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests a deliberate effort to obscure the final destination, likely a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pixomot.ru/pbw?utm_term=sample+profit+and+loss+statement+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378641/normal_6057a02dd8247.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418558/normal_6064797645a3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418185/normal_602aae2f774bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447888/normal_60029705d276e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_60b995c98614e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458635/normal_6068849d3691f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427274/normal_6023e752ea2a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497075/normal_60106494dc44e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425916/normal_602921cb2d884.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443595/normal_60c1f679c86b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498834/normal_602f3421b6fd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486963/normal_60589ff11bd3a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bukafag.pbworks.com/w/file/fetch/144509997/what_are_the_best_books_for_10_year_olds.pdfIn PDF document text
    • http://gemometis.pbworks.com/w/file/fetch/144511728/hop_ball_3d_pc.pdfIn PDF document text
    • http://viruniruxo.pbworks.com/f/concept_of_digital_marketing.pdfIn PDF document text
    • http://vimiluze.pbworks.com/w/file/fetch/145009665/fuzife.pdfIn PDF document text
    • http://sipibujewadu.pbworks.com/f/how_to_calculate_cable_size_and_voltage_drop.pdfIn PDF document text
    • http://bomasasawavi.pbworks.com/w/file/fetch/144494007/the_anointing_breaks_the_yoke.pdfIn PDF document text
    • http://sijomirurefi.pbworks.com/w/file/fetch/144699906/66957972071.pdfIn PDF document text
    • http://puzavofan.pbworks.com/f/32244265889.pdfIn PDF document text
    • http://banusiv.pbworks.com/f/reginafagesefotizajigogal.pdfIn PDF document text
    • http://xutosop.pbworks.com/f/how_do_i_get_free_imvu_credits_without_paying.pdfIn PDF document text
    • http://vomuseteweto.pbworks.com/w/file/fetch/144833202/lobeduvaxak.pdfIn PDF document text
    • http://juzifezazuk.pbworks.com/f/jungle_run_game_no_flash.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_off00012193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12193 5292 bytes
SHA-256: 91e2db94685a6b3e7a5940b4fe1624f6bbd705d0a1f3f7bb4c9143e16a7d8072
font_01_sfnt_off0001337a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1337A 11432 bytes
SHA-256: 5cb1307602a810b1f7cd580c69619f5ac545289d72c2b46540410c0327c83e86

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