Malicious PDF — malware analysis report

Static analysis result for SHA-256 9200ccdb1c66fa98…

MALICIOUS

PDF

36.3 KB Created: 2021-05-21 23:50:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 84288f005558d42cf8e817ed28055a8e SHA-1: 9c2ab4981fb1267109193e0163098fbe870b5fcf SHA-256: 9200ccdb1c66fa98cc78303b4104b2ebb254fc8c6f52cd3c96a68c6144d655d8
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 0.9492

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-on-computer-free-game-hack PDF link annotation
    • http://safetin.ru/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/roblox-printables-free_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/coin-master-2021-free-spins_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_off00003340.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3340 25440 bytes
SHA-256: 947faf6be98e8b6096f23e8124711198ccf5bf6d0ca156e3ffb47dbacf03b132
font_01_sfnt_off00006cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAE 18284 bytes
SHA-256: ce17ca81234478eae2e4d5d82743db6ecf39d6315d037818deed1e54c2e5b17b

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