Malicious PDF — malware analysis report

Static analysis result for SHA-256 adf027cc8a10cea2…

MALICIOUS

PDF

29.7 KB Created: 2021-07-20 13:25:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: dd53a2af12ed296d723f3a9946a3c80c SHA-1: 61389d6c11cd1e8dd1205ca6f0a632b33146a92a SHA-256: adf027cc8a10cea2d73dcd04b81a52806a948d1bb00373467e814901f3f447cc
130 Risk Score

Malware Insights

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

The PDF document contains a lure for 'Free Minecraft Texture Packs' and a prominent 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' call-to-action. This link, http://netcdn.tw/app/479516143/free-minecraft-texture-packs-game-hack, is identified as malicious redirector infrastructure. The document's structure and embedded links suggest an attempt to trick the user into visiting a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0573

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 http://netcdn.tw/app/479516143/free-minecraft-texture-packs-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_off000021b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21B0 22212 bytes
SHA-256: e06a255b59a8873136a505ed43bd29e0faf77535e074dd5a8249d5ddd5831e27
font_01_sfnt_off000052de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52DE 18240 bytes
SHA-256: f1e7a9ae3acfaa3d56f6a9afcdcc307065316a5e3d8814942fd3993c062bfaf5

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