Malicious PDF — malware analysis report

Static analysis result for SHA-256 193c5c4d438ab75f…

MALICIOUS

PDF

63.3 KB Created: 2020-12-22 05:49:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 62d0a18da412e0213ebf76e895225da8 SHA-1: 9c62c7323a10f39ed90483fd2aea6ffd10694aa7 SHA-256: 193c5c4d438ab75fd8de0f260de8482985c6a33869bcb219d3756e707f9fc2cb
212 Risk Score

Malware Insights

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

The PDF contains embedded links, with one identified as a known malicious redirector. The presence of a link farm suggests an attempt to obscure the final malicious destination. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7301

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=citra+animal+crossing+new+horizons In PDF document text
    • https://vevurufutugar.weebly.com/uploads/1/3/4/7/134737477/ec609e20db60659.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496225/normal_5fc189afab82c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389809/normal_5f8dbb3fa8407.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f27d43f9-fe0a-475c-9dd8-42387e6b7336/tusubelikosuvijulogaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd445a82-accb-4ccd-84aa-8e8b2d79e112/cordless_coffee_maker_milwaukee.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1e2757848ba205d1f680f/t/5fc6d8069dfc2a40450d5715/1606866950228/samsung_family_hub_refrigerator_user_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11e8e16f6d44b07c01948/t/5fca1a6a196a600d3c3911ba/1607080555640/arcade1up_nba_jam_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/365beb71-3974-457b-aa29-2107adb93029/xolilovu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50480ec917750a3f21de4/t/5fc8a51fec83506b047f3aa2/1606984992054/spectacular_now_trailer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/881d8f87-3fd8-473b-9d64-177c3ad78ad2/51737390933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ff8849c-c0c7-4458-b168-eaa8af4ab7b3/xuvowufufavoxod.pdfIn 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_off0000caf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF5 5260 bytes
SHA-256: d51787b140f631debf767d520d63f7b4ec5bc033e1661ff288ae690f7f229114
font_01_sfnt_off0000dcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC3 10164 bytes
SHA-256: fa2447502f81a1d6e2d40200bdd3ac7b280ea70f62e47a54862d07e59d69bf3b