Malicious PDF — malware analysis report

Static analysis result for SHA-256 47d7308c142a9569…

MALICIOUS

PDF

72.6 KB Created: 2021-02-14 03:03:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9559f3aa8906d21d6664ad93311cea9d SHA-1: 4fbd4c2e1e8dcfd9c561828f7aff7ced94f206ba SHA-256: 47d7308c142a9569c64fc21340d35ab7f9545479a4aba035e7e9bbfaeaaada51
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a PDF link farm, suggesting a malicious intent to redirect users to potentially harmful sites. The ML classifier and ClamAV detection strongly indicate malicious content, specifically phishing. While no scripts were directly extracted, the PDF structure and numerous external URLs point towards a phishing or malware distribution scheme.

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 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://bologen.ru/123?utm_term=hip+hop+porn PDF link annotation
    • https://cdn.sqhk.co/tikisudolo/3OdSceJ/donuts_drift_car_driving.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/tQWxPhi/menhera-_chan_wastickerapps_english_subtitles.pdfIn PDF document text
    • http://pitushok.space/rexegizogaronugikewv46e.pdfIn PDF document text
    • https://favasonod.weebly.com/uploads/1/3/2/7/132740296/gopusekurusaxa-silidukudo-tosomel.pdfIn PDF document text
    • http://bluhgang.best/411255612439daqy.pdfIn PDF document text
    • http://fruit-ital.space/nojazipasunurawatodurivenq72r.pdfIn PDF document text
    • http://usersonlineguardingsettings.site/gospel_piano_chords_progressionsfdxig.pdfIn PDF document text
    • https://cdn.sqhk.co/pufuxarabo/cbcidxw/89671007728.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/rgdgdih/break_it_down_for_you_meaning.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/zatazewoz/idsa_infective_endocarditis_guidelines_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/mixujanezomuzabuzolutota.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/admissibility_of_hearsay_evidence.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/bhojpuri_movie_new_2018_free.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_off0000e1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E2 4448 bytes
SHA-256: 767461311f009f516589c0e3193b9c5f6ea7734ffeb1d2e1d0933854bd979cc4
font_01_sfnt_off0000f0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F6 10816 bytes
SHA-256: 8725d1c959d629fdc8e7c225c4d5b6581f5fc6186614e40b10d1043d668324e1

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