Malicious PDF — malware analysis report

Static analysis result for SHA-256 6feb9dd7736dd017…

MALICIOUS

PDF

61.3 KB Created: 2020-12-18 02:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4c57339aee62e18bb7d28a17e0882e39 SHA-1: 9141197829ff9c2bcae2a008a4ae21962b3355e4 SHA-256: 6feb9dd7736dd0179605161b3dd41eeb0388523102ba68c63176e8b8214f4d9e
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 0.9996

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://traffmen.ru/123?utm_term=granny+game+unblocked+66 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379355/normal_5f8df894ce873.pdfIn PDF document text
    • https://sekirodalod.weebly.com/uploads/1/3/4/6/134673836/taravuxaku-xalukovupi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413243/normal_5fb3ca6f57953.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382961/normal_5f935cd254233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417309/normal_5fb570ce426e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369771/normal_5fb044062cf7f.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/5fc0ea21c30a162e0c52977d/t/5fc1549f5147b14804650017/1606505632233/68119880338.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf54043570fb44d1f97f3f/1606374409273/good_and_well_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c273a13a450babf34cb7/t/5fc18e34f8cdb769c61e7a73/1606520372728/sogovosusabepapon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d70b12facd59ceceee7a/t/5fca36d341142a3c4b4922cf/1607087827710/halloween_prosthetics_werewolf.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5141627a199023ad05ad4/t/5fc7d3a58c4551503ff11b63/1606931371081/84899843034.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 6

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_off0000b397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB397 5572 bytes
SHA-256: 82e0da48179715ffb4bf479becde14affcbc4e1bf09df31068a3384eecdd677e
font_01_sfnt_off0000c683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC683 10100 bytes
SHA-256: 88a5492e103567c3e774a6d873328ceedc3a69c3a227d203348fc4ee07f96f24

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