Malicious PDF — malware analysis report

Static analysis result for SHA-256 24f3d7a482bea9c8…

MALICIOUS

PDF

38.9 KB Created: 2021-05-22 01:14:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5d89c3b60b76a9fb7e8ad6c1bd8d3842 SHA-1: 6fd5d4285d3c60b9f48619aac57b1f2c127a77fb SHA-256: 24f3d7a482bea9c820f1b2a204e501604a0e2c9e1e194410f1a949ea9a9ceeef
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 4

  • 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.
  • 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/minecraft-dungeons-free-game-hack PDF link annotation
    • http://traveltrucks.com.au/images/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://traveltrucks.com.au/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://traveltrucks.com.au/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://traveltrucks.com.au/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://traveltrucks.com.au/images/free-robux-games_GM431946152.pdfIn 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_002_off000033c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33C6 25024 bytes
SHA-256: 16a9242bf4757a76e3aefe8c173bda30e7b2d0074f2f3ae916561b91b1b8bd7c
font_01_sfnt_off00006c1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1E 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off00007691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7691 18304 bytes
SHA-256: f6a577bc3f56294164eedaca4aa626844c61f0adb940d643d6f78e4abd993284

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