Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d322d1574ed3865…

MALICIOUS

PDF

76.0 KB Created: 2021-03-03 06:31:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 263ecab67689ba5a6fb272634ba2b9d0 SHA-1: f0323bb7be4840cf05c71ab12ed420fb98d68dce SHA-256: 0d322d1574ed3865b6e09e764107a9652e9ce6cb9f642319e4f2b5ec20042205
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/123?utm_term=yes+i+like+to+play+video+games+in+spanish PDF link annotation
    • https://cdn.sqhk.co/mudifuto/7ghkgjB/43190871017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450884/normal_5febce1225c0a.pdfIn PDF document text
    • https://toziraza.weebly.com/uploads/1/3/4/5/134506396/fizufokemobi-ranabijun-terubiwemuji.pdfIn PDF document text
    • https://vigoxanumevu.weebly.com/uploads/1/3/4/4/134466257/tezux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419452/normal_603ec47ef3a28.pdfIn PDF document text
    • https://marotebage.weebly.com/uploads/1/3/4/7/134712984/josodonina_pijekixi.pdfIn PDF document text
    • http://bivadula.22web.org/jabudarojexizovevabog.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/atyijMK/fiji_airways_reviews_safety.pdfIn PDF document text
    • http://azalea.store/balboa_hot_tub_operating_manual68oqb.pdfIn PDF document text
    • http://fdvsefwfrw.space/fadodexufarafe80osy.pdfIn PDF document text
    • https://cdn.sqhk.co/juzilolawu/hfifidJ/spotify_radio_station_error.pdfIn PDF document text
    • http://mmmuuuue.space/bomanaponilijr9y6q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kewivifonawati.epizy.com/raxufodegefasakodapujubi.pdfIn PDF document text
    • http://zowujobosega.rf.gd/86483562812.pdfIn PDF document text
    • http://gajopule.myartsonline.com/mibirusepovomifibidew.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_off0000ed2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2D 5464 bytes
SHA-256: a68caad24441677d4496e3680ba9be21186bf0e9a274078c47125c35b62cb1f7
font_01_sfnt_off0000ffad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAD 10444 bytes
SHA-256: f3f317dca49ec3307ebcda028410e66eec3e85f239ec4f346a52e669e9240ba5

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