Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dfe845bff4a845f…

MALICIOUS

PDF

75.8 KB Created: 2020-12-31 12:35:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 17b6bac5056bf68364c8d32eb0e0f72f SHA-1: ea7dce101d137f7e0e95303d17d43b39658fa6d8 SHA-256: 0dfe845bff4a845f2a805f6a20d018c4e39883558dcf380ef32ac78c81186d84
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a malicious redirector link, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK, which points to a URL designed to lure users with terms like 'dj song mixer download app'. The ML classifier also strongly flagged this PDF as malicious. The presence of urgency language further supports a phishing or social engineering attack pattern.

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://gettraff.ru/strik?utm_term=dj+song+mixer+download+app In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406170/normal_5f94d40b9f11a.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/ihVgCcN/9603287285.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/iPVZhhd/live_stream_nfl_network.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413368/normal_5f9538c8ad412.pdfIn PDF document text
    • https://cdn.sqhk.co/mojikeke/CifWyhb/47970291959.pdfIn PDF document text
    • https://zadopelujon.weebly.com/uploads/1/3/4/8/134884154/peniwunuse-vosilazuxanax.pdfIn PDF document text
    • https://tilapenudulaw.weebly.com/uploads/1/3/1/6/131607943/sezozapetijepirimuw.pdfIn PDF document text
    • https://nenusobodi.weebly.com/uploads/1/3/1/4/131406558/9718339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f8c0d4b377e1.pdfIn PDF document text
    • https://cdn.sqhk.co/xolilipedeko/hggfocM/lovecraft_country_book_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/wemonamo/guiemKa/70977612720.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8413105e-22ca-4f86-80fb-9903b502f230/lavabusujodevijuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02a27628-2ee9-4fdb-8255-be97ef32c18a/block_strike_hack_gold_and_money.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_off0000ec06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC06 5512 bytes
SHA-256: 700c6241b135b31f784396dcae814475300a15ed857444edd6d3bfb25de9e707
font_01_sfnt_off0000fec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC8 10536 bytes
SHA-256: 7e1fed7c2183154d2b42131cc33ecceeeb95fc49fb1856c2e7165527e0ee2c12

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