Malicious PDF — malware analysis report

Static analysis result for SHA-256 083cecd9660114c3…

MALICIOUS

PDF

64.8 KB Created: 2020-12-01 17:08:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7eba498d4461b773382cd29d34e7a7cd SHA-1: da709438d957eaa0edbd5e3c6a9f57d40c96feb3 SHA-256: 083cecd9660114c340936da19a4525c24d434aa9c16b5d660497611cdc5c8861
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 0.9998

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=th8321wf1001+installer+setup+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f8745ceea267.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406820/normal_5f927bc9d56ce.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://s3.amazonaws.com/taguxif/learn_russian_6000_words_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2abe011f6a41984911435/t/5fc588fa3485235c86840f76/1606781179401/venn_diagram_math.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1587173fb5383b69f945/1606292872146/show_me_what_you_got_rick_and_morty_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40262112-4893-45a1-a863-80738a9b78b5/notutoduwanez.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/83734244776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddc5beef-c4b7-4f54-97b8-ed99470601a6/3d_cutting_board_plans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92cca4bc-eea2-4a66-858a-9fbe887fa8a7/pumafedunerido.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/wagejowoguluzufububased.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/250892d8-3111-4fed-913e-1718eaa99f5f/bijibokupovakakelirudo.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/boko_haram_insurgency.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/juzobapuvuxujofuxudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be091876-1a55-4dc6-94de-d78999b26f79/niruturerexuroteno.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/75372166268.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_off0000b685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB685 5868 bytes
SHA-256: d98d8878cc7668878caab618de4f644d98bb8128dbb6cb50138a63cbc433c4a6
font_01_sfnt_off0000ca67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA67 10192 bytes
SHA-256: 5d8cfd74d01cdea830d6f0e5a4170c0196e01500b662cd6ae6a998be473aa5f9
font_02_sfnt_off0000ed39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED39 2088 bytes
SHA-256: 44921d15f621d2c2ef2a521fa0f27e04d53d0c5507e7a427b10da28deba3c2c5

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