Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2176e9f995793c9…

MALICIOUS

PDF

84.2 KB Created: 2021-03-11 13:58:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 706393e73934cd3d04080c63e3b4f0f5 SHA-1: 967a36cdf44cb317b44b1cfc2cd538b8f85efc71 SHA-256: d2176e9f995793c98831d600096cb61601a8aa3c916c230a777d900ddbc7dcf8
126 Risk Score

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 0.9967

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://leonvi.ru/wix?keyword=falling+creek+elementary+school+principal PDF link annotation
    • http://saxobupazes.sportsontheweb.net/93325319412.pdfIn PDF document text
    • https://bifimazetaxa.weebly.com/uploads/1/3/5/3/135326975/bulujo.pdfIn PDF document text
    • https://cdn.sqhk.co/rasufizo/LXjbrie/85318164959.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/jG5HVfF/93515959191.pdfIn PDF document text
    • http://kufowawixapiva.sportsontheweb.net/54225311480.pdfIn PDF document text
    • https://cdn.sqhk.co/nixuzosa/ljcMpU4/alistair_maclean_carti.pdfIn PDF document text
    • http://vuxilenusip.mypressonline.com/66788404080.pdfIn PDF document text
    • https://xisofufewazexi.weebly.com/uploads/1/3/0/7/130776718/04fbf623d.pdfIn PDF document text
    • https://cdn.sqhk.co/bijininabex/jhgjsjh/18288899997.pdfIn PDF document text
    • https://cdn.sqhk.co/towinomer/jjeoLih/nalafeku.pdfIn PDF document text
    • https://ribupawotomimam.weebly.com/uploads/1/3/4/6/134694318/6446742.pdfIn PDF document text
    • https://raxagipob.weebly.com/uploads/1/3/4/8/134883443/zigogagoku-vavaxu-remit.pdfIn PDF document text
    • https://ravuripuzi.weebly.com/uploads/1/3/5/9/135958818/6959869.pdfIn PDF document text
    • https://cdn.sqhk.co/piwuzuberaze/hcvihid/zitofilojupaf.pdfIn PDF document text
    • http://fogejebimo.scienceontheweb.net/82670656969.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luzigipo.epizy.com/pubg_pc_game_play_store.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/sapuxovudaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/the_things_they_carried_characters_and_items.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/conclusion_in_industrial_training_report.pdfIn PDF document text
    • http://gakilasefit.myartsonline.com/new_holland_tc30_pto_problems.pdfIn PDF document text
    • http://savikolapuxol.rf.gd/lepunox.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/microsoft_network_adapter_multiplexor_protocol_driver.pdfIn PDF document text
    • http://bisubop.epizy.com/acls_guidelines_for_antiplatelet_and_fibrinolytic_therapy.pdfIn PDF document text
    • http://ripajadiw.rf.gd/situlofegilavewotekorupo.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/live_stream_tv_apk_2018.pdfIn PDF document text
    • http://zebofazedixa.rf.gd/aristotle_s_definition_of_tragedy.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D88 5468 bytes
SHA-256: 37b12f62681edd3cb595ecf6dc6e0128ab8b3d4cb7b53c59a2c501d88ea03de2
font_01_sfnt_off00012008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12008 10244 bytes
SHA-256: 98b7f6e39cae64fadc3cb8f435d7298acc8fafbdeec0d90ce0ef223952bb350d

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