Malicious PDF — malware analysis report

Static analysis result for SHA-256 11c710738ccc56d5…

MALICIOUS

PDF

69.5 KB Created: 2020-12-21 05:15:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a454f6072c4e992e713ce73ec3acac0a SHA-1: 7d01ed98b8dad702707ceefc2143a61feda872c6 SHA-256: 11c710738ccc56d53a086646c7dfb514dc111ea59a1eac6b1aadbf52686dc39a
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs and the redirector link suggest the document's primary purpose is to lure the user to a malicious site, likely for phishing or to download further malware. The document body appears to be obfuscated or corrupted, preventing a more detailed analysis of its content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/123?utm_term=osrs+lizardman+shaman+kc In PDF document text
    • https://kapebuzuzevasa.weebly.com/uploads/1/3/4/5/134587117/6552403.pdfIn PDF document text
    • https://rilebowiteb.weebly.com/uploads/1/3/3/9/133986594/7036509.pdfIn PDF document text
    • https://pizufugutim.weebly.com/uploads/1/3/4/7/134723530/5750256c857b.pdfIn PDF document text
    • https://pusojavinobaz.weebly.com/uploads/1/3/4/3/134353251/fudixis_puzabaxiwalexu_zegijorojuni_sidulixeboxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_5fd9b1e3ce95a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480758/normal_5fbd5c656ddf7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dukajevo/bokofuweziroregogowuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af92308e-5a6b-49a5-92a8-5273880785fa/tekasidugamemigepirikil.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/xavubavifofodazuwom.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/57755590672.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD367 5320 bytes
SHA-256: 6060daca2592338d906be51a45818c4794125220eaf9abe62773efadff6c4aa0
font_01_sfnt_off0000e556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE556 11004 bytes
SHA-256: 1eb93b4ea0a1773f14ec08091121485770eabe3fce402e88e30d21133b144a30