Malicious PDF — malware analysis report

Static analysis result for SHA-256 298e3779ba5168f0…

MALICIOUS

PDF

76.0 KB Created: 2021-03-20 22:30:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c72cdec5d3717abf0778cc7f387a02d SHA-1: 2a882554d3a8765ff4fecb9895348430b7a35d3a SHA-256: 298e3779ba5168f094d9f1be99bbae77264af3d91fa82ccc8fe19adca1dbf8b4
96 Risk Score

Malware Insights

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

The file is classified as malicious by ML and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, disguised as a product search, likely leads to a phishing or malware distribution site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, potentially exploiting PDF vulnerabilities.

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/wix?keyword=quikrete+pool+filter+sand+home+depot
    • https://rogasiwenebagan.weebly.com/uploads/1/3/1/3/131380029/5127005.pdf
    • https://static.s123-cdn-static.com/uploads/4487007/normal_5ff130a775206.pdf
    • https://kuxapularutamux.weebly.com/uploads/1/3/5/9/135984678/9177192.pdf
    • http://top-agent.ru/bikikigotuzoqzmr.pdf
    • http://farvestnn.ru/hp_p3015dn_printer_price3fvb3.pdf
    • https://cdn-cms.f-static.net/uploads/4413583/normal_60317173290f7.pdf
    • https://cdn.sqhk.co/salenasova/fAhhig3/duplicity_antonyms_in_english.pdf
    • https://cdn.sqhk.co/bapuparit/gjhdFih/driving_school_classic_mod_apk_obb_download.pdf
    • http://romeita.fun/martin_luther_commentary_on_romansi2ywn.pdf
    • https://cdn-cms.f-static.net/uploads/4381531/normal_6018711311703.pdf
    • https://logekififej.weebly.com/uploads/1/3/4/5/134502341/3297588.pdf
    • http://funseeds.site/cake_icing_ideas_simple6ac5o.pdf
    • https://marejipafikelor.weebly.com/uploads/1/3/1/4/131437604/55f6d9a556d9.pdf
    • https://static.s123-cdn-static.com/uploads/4495841/normal_6005e68cdcfe2.pdf
    • http://fito4ka.xyz/razibobatogefenopamowuwhhp0i.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/baa5e7fd-ad8a-46a5-9a83-2e346c47ba14/925440787.pdf
    • https://uploads.strikinglycdn.com/files/49da4b14-a76b-4271-94c4-6beec77ea063/pedoxewujuz.pdf
    • https://uploads.strikinglycdn.com/files/295e965c-1a00-4a66-9af3-0a81a11d531b/56348722832.pdf
    • https://uploads.strikinglycdn.com/files/7f79e928-e2b5-4c8a-ab62-5968fd60a45c/32258021366.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecce.bin
da8f03dea41c691a809cc2659a4ef75d54394288150a4e85d94f469600f5912d
pdf-font-stream PDF embedded font (sfnt) at offset 0xECCE 5408 bytes
font_01_sfnt_off0000ff08.bin
200e8f3a477d6f0147b755164e9cf57ea4d539662b8be230dc273354b9ed7045
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF08 10488 bytes