Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee93495638ec65f…

MALICIOUS

PDF

75.5 KB Created: 2021-03-28 18:29:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9a99ded645dbe915efa14eaae076695a SHA-1: 11fe5be00fd0bad165bc285653138187c748418d SHA-256: 7ee93495638ec65f69ce02f1cad7a9360bf848c3ed23144ace00f7fc6da9e5f8
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 0.9997

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://botokaw.ru/strik?utm_term=contrato+de+arrendamiento+terreno+agricola+peru PDF link annotation
    • http://milktree.store/54369699762fob7c.pdfIn PDF document text
    • http://filuxunokenobud.mygamesonline.org/aorta_branches.pdfIn PDF document text
    • http://xerujupuje.sportsontheweb.net/57620475868.pdfIn PDF document text
    • http://nunejabu.scienceontheweb.net/8293780482.pdfIn PDF document text
    • http://aycotoro6.xyz/sopidetogagagoiqms5.pdfIn PDF document text
    • http://pafowitowa.medianewsonline.com/what_is_anna_freud_famous_for.pdfIn PDF document text
    • http://ouily.xyz/columbus_dispatch_report_missing_paperzhpy5.pdfIn PDF document text
    • http://sale20.site/15167729278p3fhc.pdfIn PDF document text
    • http://noncomform.space/pauline_epistles_from_prisonq3ztm.pdfIn PDF document text
    • http://formulamoney.top/uri_dialogue_how_s_the_josh_answerlitu1.pdfIn PDF document text
    • http://kigurumi.org/21840418551j31vx.pdfIn PDF document text
    • http://jovopomutulilo.medianewsonline.com/klasifikasi_avicennia_alba.pdfIn PDF document text
    • http://palopepidek.mypressonline.com/90224110109.pdfIn PDF document text
    • http://kalukawuwo.mygamesonline.org/8208914550.pdfIn PDF document text
    • http://foramodosug.mygamesonline.org/presentation_signpost_expressions.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://694dae7a-2033-4a59-8b06-91ff4eec0774.filesusr.com/ugd/e1d58f_bf99d65076484dbc8263b7ad69183f5c.pdf?index=trueIn PDF document text
    • http://fegoluvarelewum.myartsonline.com/mn_drivers_license_practice_test.pdfIn PDF document text
    • http://koxolavomuzo.myartsonline.com/bulletin_de_paie_simplifi_2020.pdfIn PDF document text
    • https://3f46bf15-0a8c-4e80-b3e5-a2e3bf90e008.filesusr.com/ugd/8e6e76_b6cc8e931be446829dc776566c7f5356.pdf?index=trueIn PDF document text
    • https://d128792e-e0a8-46e0-98ed-b941f5da69b2.filesusr.com/ugd/b98abb_93b39f62fa374a549332a25b499a409b.pdf?index=trueIn PDF document text
    • http://sinusisokopex.atwebpages.com/wodejisupajodunerine.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_off0000e7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7FD 5120 bytes
SHA-256: 7bb885635cd774bcfebecc25cf87fd707ac406520521c8a21c6219727fcf7d44
font_01_sfnt_off0000f950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF950 11412 bytes
SHA-256: 18afcbee2f12f2ccb0c271826fec48c690c57ec3b4e6e3ff9f0f6000549b5710

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