Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e9353c96d404cc…

MALICIOUS

PDF

39.9 KB Created: 2021-05-21 02:39:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b7448b6100ae7ecd0bf7c31a9df86b7b SHA-1: 924307292f1d9dc2a50e27fb65318c4d697db153 SHA-256: 36e9353c96d404cc114d93b6d4776949683e57be655aed02b05d76d8a3367a52
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/how-to-download-minecraft-hacks-game-hack PDF link annotation
    • http://ivalor.fr/images/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • http://ivalor.fr/images/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://ivalor.fr/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ivalor.fr/images/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://ivalor.fr/images/coin-master-connection-lost-hack_GM406889139.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_off000034ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34AC 27012 bytes
SHA-256: 2a7d7249c7f19c5300180cd4c4e87bcc67749a0329aec9de8cbbc544d53ef67d
font_01_sfnt_off0000702c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x702C 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off00007a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A15 18460 bytes
SHA-256: 201e47ea1bc759f6ab60629fe707baeeae03fa46224cbd2752ecc215bd4960d2

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