Malicious PDF — malware analysis report

Static analysis result for SHA-256 596e3ff2185bc268…

MALICIOUS

PDF

34.4 KB Created: 2021-05-21 05:47:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5ced5788c273f0dbbe33a93212f57b7c SHA-1: 51051910ade2467ed6a9ef3d5d0959a5943f4255 SHA-256: 596e3ff2185bc26875d9348146a9a6a4d9ba2413b61e4bedb8b76a1ef1043fbc
130 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a redirector link that masquerades as a game hack or generator, specifically pointing to 'is-minecraft-free-on-pc-game-hack'. The document body also contains a call-to-action phrase, 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', further reinforcing the lure. The embedded URL is known to be associated with malicious redirector infrastructure, suggesting the primary goal is to lead the user to a malicious site for further exploitation or payload delivery.

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/479516143/is-minecraft-free-on-pc-game-hack In PDF document text
    • https://www.youtIn 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_off00002d96.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D96 25252 bytes
SHA-256: 6b64c8c17cbbc9699035f2f3d9828ad6f6074ddd65a83d8e2a1baf7b3b99faa0
font_01_sfnt_off00006763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6763 17724 bytes
SHA-256: 0ab36ec9301b9393cdac417675da6d9cb227c8d57ccc288e3f382d638798bb6c

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