Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6e1dd997967781…

MALICIOUS

PDF

47.3 KB Created: 2021-05-11 20:19:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 6f67e43d91cd23c49547b86bd83cd3b9 SHA-1: 72c4ebb27cef1e3bdeef6808ee51fe455fcae7b5 SHA-256: db6e1dd9979677812ed3fe0d9b88e98aa20d2c6942441167294633d87caee086
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it's a lure for game hacks and links to known malicious redirectors. The document body, though partially corrupted, contains text related to 'Minecraft Dungeons Download Free' and a URL that is also flagged as malicious. No scripts were extracted from this sample, but the embedded URL is the primary indicator of malicious intent, likely leading to a further stage of compromise.

Machine Learning

  • Nyx PDF Classifier clean score 0.0124

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-dungeons-download-free-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000036d0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36D0 24184 bytes
SHA-256: d71421ffea62911dcd0e8593c621e3a745d89b571c423e4ebd1c203b2c01f292
font_01_sfnt_off00006e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5F 7936 bytes
SHA-256: 218d53b68bdddb064f6fba4be822d5b3725ed1cef1a3b42796a8dd99c4a62f4e
font_02_sfnt_off00008788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8788 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off00009614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9614 18720 bytes
SHA-256: 921efc7a282f70be8e45d9f485508adcbd6bee6f34856fa33b0668efabfdb805

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