Malicious PDF — malware analysis report

Static analysis result for SHA-256 83a5e4c7c024ac3f…

MALICIOUS

PDF

72.1 KB Created: 2021-02-21 21:09:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ab50b13f68d39387b8184184453dfcb9 SHA-1: 3d9e115c7477f6fea8d99e2b9910eae3ba7f53fc SHA-256: 83a5e4c7c024ac3fca75174cb15c5e48894ee8da7f769ab83e59bbc600d2611b
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs and is flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains keywords related to 'coleman roadtrip 285 grill accessories' and application metadata, suggesting a lure to a compromised website. No scripts were extracted, but the presence of numerous suspicious URLs points to a high likelihood of redirecting users to malicious content.

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 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://seumenha.ru/strik?utm_term=coleman+roadtrip+285+grill+accessories PDF link annotation
    • http://dompodklyuch.com/jedulogutujekogotr92y.pdfIn PDF document text
    • https://cdn.sqhk.co/vomifavafo/POgjQFI/need_for_speed_no_limits_hack_pc_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501360/normal_5feb4e85584c9.pdfIn PDF document text
    • https://mejepizejuv.weebly.com/uploads/1/3/4/5/134528376/3746098.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369153/normal_60325e32b7367.pdfIn PDF document text
    • https://tifimiwarefimi.weebly.com/uploads/1/3/4/8/134895051/vutukafip_rulije_lekixazuvow_pafepajugote.pdfIn PDF document text
    • https://kixivoveluvib.weebly.com/uploads/1/3/0/7/130775150/caabeeadf.pdfIn PDF document text
    • https://xibixijuli.weebly.com/uploads/1/3/5/3/135399677/xegozotuniradob.pdfIn PDF document text
    • https://cdn.sqhk.co/fufigavaki/chbAlgj/87639882280.pdfIn PDF document text
    • https://cdn.sqhk.co/wojipezusax/jhOjahj/99118001965.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/venaxubapopaw-jabegoxowivala-jemazefuvobobo.pdfIn PDF document text
    • https://nixetamusizag.weebly.com/uploads/1/3/0/7/130740210/78937.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/xupovobejanam/64636144550.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/mubalofu.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/du_sol_datesheet_2019_bcom_hons.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/ciara_new_song_level_up.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_off0000d9f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F6 5748 bytes
SHA-256: 41744d2efc3bdca9261952d39a9b37c00d3e6dbc6664df45e47fbef339ef29e3
font_01_sfnt_off0000ed67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED67 10956 bytes
SHA-256: dec792105c5dce8526d04ad2929ba9bd41be2dd1a921cdb0cebe3059885850a5

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