Malicious PDF — malware analysis report

Static analysis result for SHA-256 259a0abb5259f161…

MALICIOUS

PDF

36.4 KB Created: 2021-05-10 12:05:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: eac49f678d59b6927621693216ed3797 SHA-1: 6aaaa7bfbdf2513d5861c90c1c2139b9ec172bf0 SHA-256: 259a0abb5259f16135133e78bb2c81f2c98d072782850f4a36e43f573d936f29
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high-severity heuristic indicating it's a social engineering lure, specifically a 'game hack redirector' pointing to a suspicious URL. The document body, though partially corrupted, includes text related to 'Minecraft Pe For Free' and the suspicious URL, reinforcing the lure. The SE_CLICKFIX heuristic suggests the document may also instruct users to execute commands, a common tactic to bypass security measures.

Machine Learning

  • Nyx PDF Classifier clean score 0.0292

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/how-to-get-minecraft-pe-for-free-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003603.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3603 24884 bytes
SHA-256: 89654ae599127d33971370ed218bed874d8327b3826a7fa950cfeda9164bd60b
font_01_sfnt_off00006dfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFB 18028 bytes
SHA-256: 3ed4cc32a3614fc42f77637b5226aac8e96d41a1bdab71d116d218547dfdfc35

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