Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e3a667f34d7f1b7…

MALICIOUS

PDF

63.7 KB Created: 2020-11-16 18:08:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3758e1963b7b9ed25ce7ff302dee9856 SHA-1: 1177e6f0b314fe879f3b459c1cf7b404eff9c88d SHA-256: 0e3a667f34d7f1b7cbe67f6596a54f36c2a4680654f8d6a9a70e4744db2a0531
214 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The document body, though partially obfuscated, includes text that appears to be a lure for a game, suggesting a phishing or scam attempt. The presence of numerous external PDF links further indicates a link farm or redirection strategy to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/123?utm_term=amazing+tanks+2+unblocked
    • https://jezitazosebizag.weebly.com/uploads/1/3/4/7/134700096/taxadifupesafutom.pdf
    • https://cdn-cms.f-static.net/uploads/4382781/normal_5f96e3ff91794.pdf
    • https://cdn-cms.f-static.net/uploads/4367920/normal_5f8d6cee6fba0.pdf
    • https://josilagowuf.weebly.com/uploads/1/3/4/0/134018629/sotimezamikala.pdf
    • https://poxusesemeli.weebly.com/uploads/1/3/4/4/134462398/banazuxew.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/16269a10-7fa1-4d53-b892-80e6cdd18e0e/tactics_for_listening_second_edition.pdf
    • https://uploads.strikinglycdn.com/files/748bfec0-756f-4a93-ae0f-f78e616be244/58645852785.pdf
    • https://s3.amazonaws.com/bulalowisu/rcog_guidelines_uterine_fibroids.pdf
    • https://uploads.strikinglycdn.com/files/dbfc06b9-0166-4c9a-9aae-8126811ad58f/university_of_utah_day_parking_pass.pdf
    • https://uploads.strikinglycdn.com/files/165bd844-7636-4a64-83fe-030ee56130a9/xowefefirorovuwiretokiru.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_off0000bb9f.bin
761ba395047aea6dd2c3cae8fc504d95006dd859a41bb6c94b75813e77a67bbc
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB9F 5536 bytes
font_01_sfnt_off0000ce6e.bin
f6a34d3272662cbe888c13df1d0f9261b41f8e39fdfef6915da45386225c8615
pdf-font-stream PDF embedded font (sfnt) at offset 0xCE6E 10648 bytes