Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fcc919a6f6d4963…

MALICIOUS

PDF

81.2 KB Created: 2021-02-21 15:11:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 92a681aa491d82064dfc53d385db3d1b SHA-1: 1b3cc9deca6fd5b1ae23feae3490e614cdf6774a SHA-256: 6fcc919a6f6d496336f14c309d19fc362a9c7a442d6afb7ae4a0bf7822538f71
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

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 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.
  • 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://baarspo.ru/strik?utm_term=how+to+put+on+the+armor+of+god+by+mike+bennett PDF link annotation
    • https://mafaredoli.weebly.com/uploads/1/3/2/6/132695491/dipiv_gosat.pdfIn PDF document text
    • https://tebafazar.weebly.com/uploads/1/3/4/2/134265880/5277a470.pdfIn PDF document text
    • https://vozozexofevufut.weebly.com/uploads/1/3/1/8/131871902/xogavoj_xajumu.pdfIn PDF document text
    • http://fojefefipo.22web.org/bully_anniversary_apk_data_google_drive.pdfIn PDF document text
    • https://fekakawe.weebly.com/uploads/1/3/1/4/131437222/370657.pdfIn PDF document text
    • https://jewinovezuxumat.weebly.com/uploads/1/3/1/4/131407424/bewuzusekanakumug.pdfIn PDF document text
    • https://davijune.weebly.com/uploads/1/3/5/3/135315517/4261400.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500897/normal_5fdd168b7b8e4.pdfIn PDF document text
    • http://xamejaduxak.22web.org/58756111334.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/vedexajawo/how_does_mail_get_returned_to_sender.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/56851234064.pdfIn PDF document text
    • http://gavenivifi.rf.gd/61128528443.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/zukenatopetexomidaroxa.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/wapadexexitubasok.pdfIn PDF document text
    • http://kitukogoxav.epizy.com/a_project_report_on_financial_performance_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/apollo_justice_ace_attorney_apk_espaol.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_off000100d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D2 5604 bytes
SHA-256: 9f2b36a04af59d0c4ff27f01d5da7b76ed9545243b4bd1aff2a3ae0ddfd33dfc
font_01_sfnt_off000113ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113CE 10516 bytes
SHA-256: 48274e8a266b136b97d0977bc33740676d90794794abae1d5bddd4ee2482a7e8

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