Malicious PDF — malware analysis report

Static analysis result for SHA-256 287a367df1ea211d…

MALICIOUS

PDF

69.0 KB Created: 2021-02-17 05:51:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 35b74e1e5388ce2ce163767c2296206c SHA-1: df7efb4800e7c5a6dc20f9a45fbf02741e3e71ad SHA-256: 287a367df1ea211d6d1ce317fbb8bf829fe15a23a4209e916f148f1380616f10
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, contains references to 'Pawnee tribe clothing' and the authoring application 'wkhtmltopdf', suggesting a social engineering lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/aws?utm_term=pawnee+tribe+clothing PDF link annotation
    • https://cdn.sqhk.co/nakizenonetu/ihgdthj/soccer_champions_league_standings.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/EbhgjdJ/vapuxepuzajuxux.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/2aA8HZs/fashion_story_cheats_gems_android.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/8jfDeN9/49804092368.pdfIn PDF document text
    • https://cdn.sqhk.co/fusexabuvej/75ejcFw/economist_intelligence_unit_internship.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/wizitifowubux/femogobafimokekezisutowe.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/bhakti_gana_bhojpuri_mein.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/dipowevib.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/sudojogojafajaxololubi.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/10577945059.pdfIn PDF document text
    • http://vanuragevexofe.rf.gd/66887467035.pdfIn PDF document text
    • http://nagofubufi.epizy.com/free_year_5_comprehension_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/hampstead_and_kilburn_uk_polling_report.pdfIn PDF document text
    • http://batogegimuwew.rf.gd/rawigamenuputukafurop.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_off0000d3df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3DF 5116 bytes
SHA-256: 1ce9e451359fc39bf86e0575db8d45c9b92149cd3830184529e61f5664073d8e
font_01_sfnt_off0000e554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE554 9932 bytes
SHA-256: ab8a663db0de939ef4811a1387e4444777c4b848536d3c6a5d4bc08352b42344

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