Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ad7e60222a8b4ae…

MALICIOUS

PDF

33.0 KB Created: 2021-05-24 19:50:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 04ae8f93c833f244eb9c6841789fd614 SHA-1: 0c35c78280f704435b8c5942f157d14dbc259357 SHA-256: 7ad7e60222a8b4aee4d33d3aab42db8ae5cb4308d9b620b95eeffd466679b4ba
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to a malicious domain, masquerading as a 'free generator' or 'game hack'. The document body and heuristics indicate a lure to download or access a resource from the provided URL. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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/835599320/free-followers-for-tiktok-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
stream_002_off00002a23.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A23 24204 bytes
SHA-256: f1d24dc39fd18480286b61c12814885cc19cc81017f5467a01a7e44a5b4a3649
font_01_sfnt_off0000617a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617A 17692 bytes
SHA-256: 1f78b91f0c2492c05ffeec3d34563e43a0b15f4cc5b4ec219908e79cb2313b3f

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