Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ea62e94bfd6f46…

MALICIOUS

PDF

75.8 KB Created: 2021-01-29 07:21:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 6aaf0bdc9bdd3b9737f5df073310be34 SHA-1: c2c40915c19559e2ef2f244e22b3204e16c4235d SHA-256: a2ea62e94bfd6f465942bbd98f729304136d96d9fe8c8cd6bece2e7d8a067f5d
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file is identified as malicious by ClamAV and a machine learning classifier, exhibiting characteristics of a phishing and link farm attack. It contains numerous external links, many hosted on disposable domains, suggesting an attempt to redirect users to malicious sites. The document body, though partially corrupted, appears to be a lure related to an Alcatel phone manual, likely to trick users into clicking the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://maypoin.ru/aws?utm_term=alcatel+lucent+ip+touch+4038+manual+espa%25C3%25B1ol PDF link annotation
    • https://cdn.sqhk.co/mugukawi/c8spzih/act_geometry_crash_course.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457868/normal_600254d694eec.pdfIn PDF document text
    • https://nakowubolitek.weebly.com/uploads/1/3/5/3/135349387/ada61147.pdfIn PDF document text
    • https://cdn.sqhk.co/wanevakaxuma/g4NIib2/the_battle_cats_super_rare_tier_list.pdfIn PDF document text
    • https://zalivibutadugaf.weebly.com/uploads/1/3/5/3/135391941/7000924.pdfIn PDF document text
    • https://cdn.sqhk.co/pevizopubok/bha13hj/pro_football_coach_roster_url_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/ritasuxa/5jcidju/fallout_shelter_cheat_engine_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/rotuzuwibi/IWiiShb/15730029195.pdfIn PDF document text
    • https://cdn.sqhk.co/nugutobudan/lTJjigh/semodepunivuxozoz.pdfIn PDF document text
    • https://wojozumokibenap.weebly.com/uploads/1/3/4/0/134097994/simiked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474445/normal_60138b3092a60.pdfIn PDF document text
    • https://cdn.sqhk.co/niminililez/ihchfYO/88848649465.pdfIn PDF document text
    • https://cdn.sqhk.co/buxifuludo/hhQ9Vja/throne_room_of_god.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388842/normal_5fe9602f189ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_600fdadf9bb88.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483338/normal_5ff517b4b3110.pdfIn PDF document text
    • https://cdn.sqhk.co/duxajoje/FKjdhhg/bilapijewemudoxon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406771/normal_5fd2dd87a6aa2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461234/normal_5fc999f461801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367680/normal_60133e1614839.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375909/normal_5ffdee442dde9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sodarag.epizy.com/gobipusexenuteve.pdfIn PDF document text
    • http://zaxutakizet.epizy.com/jewufojidegagigijariza.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_off0000e706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE706 5868 bytes
SHA-256: 92a26e5d8757cf4da04c27834057c13dc3ea2201a9e711aa96e3a94f9a37be7b
font_01_sfnt_off0000faa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA0 10736 bytes
SHA-256: 69297e863aa15f3bec8b6a7cd5060e132d0a107e681bae2c1ab7ec0f4141c2ca