Malicious PDF — malware analysis report

Static analysis result for SHA-256 926e7dd6767bb4df…

MALICIOUS

PDF

171.6 KB Created: 2021-04-07 09:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 933a2128d038180c46cf2ad2839dd518 SHA-1: 29a1589cb8c2bbdd6b61a50b93b6cf29094fe74d SHA-256: 926e7dd6767bb4dfb4defefd3ad0b4a9d48f991a6689d7be281078645ca9cdf7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9986

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://pelibifir.ru/strik?utm_term=digital+marketing+manager+salary+new+york+city PDF link annotation
    • https://zilexewutefak.weebly.com/uploads/1/3/4/6/134608169/tezejosaxitoso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420761/normal_606d4e50afc89.pdfIn PDF document text
    • https://lovuzuligo.weebly.com/uploads/1/3/5/3/135315796/1921557.pdfIn PDF document text
    • https://guwifanifinib.weebly.com/uploads/1/3/2/7/132740319/fifum_nokokofulexemu_kagisomebevaxos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470839/normal_5ff57f9ac5a33.pdfIn PDF document text
    • http://fewiguvawig.iblogger.org/5530497621.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/netofanasubi_xezivowozanofu_kafuri_woguwuzi.pdfIn PDF document text
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/9965384.pdfIn PDF document text
    • http://tixomuwenape.22web.org/94419387848.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370294/normal_5febef10a9fbe.pdfIn PDF document text
    • https://fusopozosasotex.weebly.com/uploads/1/3/4/4/134477759/zizofevax.pdfIn PDF document text
    • http://rikaseligexodiz.22web.org/11657334824.pdfIn PDF document text
    • https://suxuwimuwudex.weebly.com/uploads/1/3/4/6/134641155/bfa36b308.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/9220415.pdfIn PDF document text
    • http://zifujujefilat.iblogger.org/65273764947.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pegebunov/77040391800.pdfIn PDF document text
    • http://fuguxudurod.rf.gd/lawabirapazoruladinuji.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/drummond_island_ice_fishing_report.pdfIn PDF document text
    • http://jadaxanesutav.epizy.com/93303266834.pdfIn PDF document text
    • http://vikuwopijoxu.rf.gd/sines.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/58903277673.pdfIn PDF document text
    • http://xadifoduboboriv.rf.gd/51240307544.pdfIn PDF document text
    • http://zokepufa.epizy.com/musexatajumupuviliwozupev.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_off00026648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26648 5376 bytes
SHA-256: 0d82e2550cd12914bd421bce6bac8556a1f53f7ff1cd3200bc08574af42ea7a5
font_01_sfnt_off000278a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x278A0 11840 bytes
SHA-256: 2336c5d0cdee2fefa65747b689d7623bf40d7a649c18e88537d59f1b65f50768

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