Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c045d7433890480…

MALICIOUS

PDF

37.0 KB Created: 2021-05-20 07:46:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9a89e841543898440b3ed42de2d44aaf SHA-1: 1040255744d782b76358c1658a564fc84c44fb0a SHA-256: 5c045d74338904803d12cd9d314792ebeded9603dc28a695f266ec7fa3adb60b
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'Roblox Trolling Game Hack Generator'. The document body also contains a prominent call-to-action phrase, 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. While no scripts were directly extracted, the PDF structure and malicious links suggest an attempt to exploit users through social engineering, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0739

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/431946152/roblox-trolling-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4A 30576 bytes
SHA-256: f4f1ed18383db76b4f3eb12f2836c6e5789e3e332e89defea576d993ebffcc90
font_01_sfnt_off00007000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7000 18192 bytes
SHA-256: 71604384ebc4a394942ac25074e396c0ebb11f2a88b51d5532127cac238e2fd8