Malicious PDF — malware analysis report

Static analysis result for SHA-256 51169c2620c703a6…

MALICIOUS

PDF

67.4 KB Created: 2020-12-10 15:43:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3e60b764ed87dba6a6d36c0005b7cbc7 SHA-1: dbff1817f93f0a2094585f4dd2c0afb1ce48029f SHA-256: 51169c2620c703a6e3644085c48ab4ae37cff8903be928c5e5b9660438877f97
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ggtraff.ru/strik?utm_term=ulta+dress+code In PDF document text
    • https://lariwajiko.weebly.com/uploads/1/3/4/3/134316624/netidepepitovesufe.pdfIn PDF document text
    • https://woniwisupu.weebly.com/uploads/1/3/4/2/134266019/6515906.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367938/normal_5fbe97310d30d.pdfIn PDF document text
    • https://lekekupoj.weebly.com/uploads/1/3/4/5/134513515/zilabikobina.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422147/normal_5fa013c7addb8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc52a646b97992eb5777856/t/5fcd611774a40730fbab1f18/1607295256088/supertuxkart_1._2_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/introduction_to_human_resource_management_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/the_anchoress.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/potevinur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe03f47acac6192a87290e/1606288375270/85904854870.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c77ea13a450bab15de1a/t/5fcb3a3733fb14715cb884cc/1607154231074/viking_hunters_game.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_off0000c30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC30D 2948 bytes
SHA-256: 8f2bb665d53b30ce2305457644dbf82c308c543a7f76ed88104d2af52cdf7564
font_01_sfnt_off0000cd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8E 4924 bytes
SHA-256: 25a55700f765dc7f93fe98692635309a3f03d80aaf516e638a608e5f53e3a657
font_02_sfnt_off0000de60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE60 10104 bytes
SHA-256: 21191af6707e3451db0a23445a6500a8ecec86623dcfd7e9b49faf31a6105939

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