Malicious PDF — malware analysis report

Static analysis result for SHA-256 bedefc922fab57b8…

MALICIOUS

PDF

40.2 KB Created: 2021-05-12 11:07:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ede51811415017707b5b2d365841cfd9 SHA-1: 14f50aefd1771fb353479315d253cad7f3c6b8ed SHA-256: bedefc922fab57b824cb6e87d3e69523b3237eb3041981a117b06d26d1b3e8e2
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'Minecraft Account Hacked' and 'Game Hack' generator, which redirects to a known malicious URL. This indicates a phishing or scam attempt designed to lure users to malicious infrastructure. No scripts were extracted from this sample, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/minecraft-account-hacked-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000344b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x344B 28092 bytes
SHA-256: 63f4aa2b272afc1288df62863f676dbbf162006c59943439c8f2cf173a765127
font_01_sfnt_off00007219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7219 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00007c28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C28 18192 bytes
SHA-256: 008244ed49e44a6e3f1c26538d212edbe60ea445ab612c7727f56c46dc3d0edb

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