Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef8ce6fde2ca925…

MALICIOUS

PDF

70.5 KB Created: 2021-02-19 10:42:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 02d0e483a5a1a7f81ce2b8bacca1fc9e SHA-1: e751ef5e28928abb721794b7e8a2aad94bc2ccb5 SHA-256: 9ef8ce6fde2ca9257910475cbb4540b7484fc70308535c203fb7ae4da1cd8f22
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the presence of embedded URLs and the document's deceptive content point towards a phishing lure designed to trick users into visiting malicious sites.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=excelsior+springs+golf+course+scorecard In PDF document text
    • https://cdn.sqhk.co/gizukakom/WjhhhrU/golokogiweri.pdfIn PDF document text
    • https://cdn.sqhk.co/wodelaganav/fWgc4w5/free_barcode_scanner_for_iphone_6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388814/normal_5fc66524e01be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467273/normal_5ffea1904de83.pdfIn PDF document text
    • http://lnstagram-office.com/5380810621520b72.pdfIn PDF document text
    • https://cdn.sqhk.co/wasefago/muIDiek/54249783520.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386594/normal_5ff26bf176568.pdfIn PDF document text
    • http://trokot-shtorki.online/33797225041q64r4.pdfIn PDF document text
    • http://tronreserve.online/jiwoduwerepituzofiruzk0q27.pdfIn PDF document text
    • http://feldhaus-klinker-plitka.ru/honda_passport_review_consumer_reportsnaxn2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368219/normal_5fcbf1d20d5cd.pdfIn PDF document text
    • http://afracheat1.xyz/bangla_sad_shayari_video1eswe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449618/normal_5fcea24483ff5.pdfIn PDF document text
    • https://cdn.sqhk.co/wamiratena/hfhaLlo/lufusedupabozegabimuxijef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419846/normal_5fdf04f84fa07.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwetebep/rge2xih/47865715320.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD638 5348 bytes
SHA-256: 730dd6fb425b1f029ecebb7a75a1c041bcb34f870fcdf1dc123e3601bf97db00
font_01_sfnt_off0000e87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87E 10656 bytes
SHA-256: 98ee7a65656ea8e80eff8918e5d7584ced71d2593f0c849039b2584fbea475de

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