Malicious PDF — malware analysis report

Static analysis result for SHA-256 2502196d73a2a5bf…

MALICIOUS

PDF

78.0 KB Created: 2021-01-13 19:42:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f851c453d2dce090fb4011df191e2419 SHA-1: eb46dfb2f9bd1c226f8f1a8387029f2d1a69eb07 SHA-256: 2502196d73a2a5bf3116f847364a2350dee814d79cb09a691e125c112a144c74
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-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.
  • 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/wb?keyword=what%20human%20food%20can%20crows%20eat In PDF document text
    • https://cdn-cms.f-static.net/uploads/4457320/normal_5fb5eef0ed3e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f8a1d22d4235.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379964/normal_5f94a7432bd6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410983/normal_5f95801b103b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451045/normal_5fc7dfe4cfb75.pdfIn PDF document text
    • https://cdn.sqhk.co/nedupugifuka/ghjggIo/johnsonville_pizza_snackers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f892dd001bde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381541/normal_5f8c4e18e6849.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498992/normal_5ff91ee086abd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374840/normal_5fb32aaf152e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376371/normal_5ff66672f3a28.pdfIn PDF document text
    • https://cdn.sqhk.co/tevosenijosu/Tf2hegd/throne_of_blood_movie_characters.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
    • 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 1

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_off0000e6b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B7 5168 bytes
SHA-256: 9d2aa7b2dcc884b79c1fd417aa44bb0a925175b08034871c7cf24eb730540a65
font_01_sfnt_off0000f831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF831 10960 bytes
SHA-256: 0f0ca82cf9c98159b6829badd8bda52ffc161783782d3adce3b70b8995b1cbfe
font_02_sfnt_off00011d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D84 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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