Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c6f3a91847d534…

MALICIOUS

PDF

77.2 KB Created: 2020-11-26 03:49:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 03d07c177ae6fda492230fa180b68ef8 SHA-1: 72d8a9b21feb03aeb0d4cdd977993f389bae8183 SHA-256: e6c6f3a91847d5349346ac21ee7823275c104b0f3221b7f4fbfe7bf61308b929
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure referencing 'Diablo 3 cheats' and includes a link to a known malicious redirector, 'https://traffmen.ru/strik?utm_term=diablo+3+cheats+xbox+360'. This indicates a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffmen.ru/strik?utm_term=diablo+3+cheats+xbox+360 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376086/normal_5f98e85d44e88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368479/normal_5f8b7b6a927b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495265/normal_5fb4a64115fd1.pdfIn PDF document text
    • https://turetajonu.weebly.com/uploads/1/3/4/6/134629909/9980600.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367925/normal_5fa54b058080e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481156/normal_5fb279e534ef2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/julexekubaj/apa_annotated_bibliography_template_google_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/agriculture_in_bangladesh_performance_problems_and_prospects.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/sazisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/214dd8a5-606b-4976-8314-85e0b6280dcd/76694407886.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/13879678918.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/27555269756.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B5 5140 bytes
SHA-256: 50c2db0c76bdd085c0f1dea8ef95e318deb55c3ab54517f4656ec4ac7bda662e
font_01_sfnt_off0000f631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF631 10468 bytes
SHA-256: aa95f2e27c1ca10993b3b664285bb0b4eb34cf0b3a661a9ac310f902b6b4c68f
font_02_sfnt_off000119db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119DB 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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