Malicious PDF — malware analysis report

Static analysis result for SHA-256 4413b556a029a854…

MALICIOUS

PDF

38.2 KB Created: 2021-05-22 16:19:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0e30a692b8d7c23a1957555da8db5c4f SHA-1: 0c35b9eb6bb5cdfe73f5e4dde9c7c3ce130907e5 SHA-256: 4413b556a029a85454415d351cd56ac06d1465eb77698f7680f7c076cbbee00e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The document body and embedded links reinforce this by mentioning 'free spins' and 'coin master game hack'. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/406889139/how-to-get-free-spins-on-coin-master-game-hack PDF link annotation
    • http://federcaccianucleomagenta.it/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://federcaccianucleomagenta.it/images/fb-coin-master_GM406889139.pdfIn 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_off000031f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F2 30448 bytes
SHA-256: 8fdaeac376ea70d16f5b1993d89a0f5f17f39de904ba04893b5ec072e0443bc7
font_01_sfnt_off00007511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7511 18052 bytes
SHA-256: ea84a6236c2a6e621998df031dd6ced14717eafc49be4f8ccfac8b30b37a9d36

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