Malicious PDF — malware analysis report

Static analysis result for SHA-256 c44a69d33daa8028…

MALICIOUS

PDF

37.7 KB Created: 2021-05-22 16:35:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 35b9117063df33dfca63ffe833a799d7 SHA-1: 105cf251cffe186cabfaaa89de5d4a89c16cfff7 SHA-256: c44a69d33daa8028c33a69b6e82f9aab43ae70cf59486d21ba290a42112ce17c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to 'free Robux' and 'game hacks', directing users to external URLs. These URLs are associated with a 'free generator' or 'game hack' redirect, indicating a likely attempt to lure users to malicious websites for phishing or malware distribution. The presence of embedded links and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/431946152/free-robux-no-human-verification-or-survey-2021-game-hack PDF link annotation
    • http://mb-alati.hr/files/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://mb-alati.hr/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/coin-master-claim-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_off000034e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34E6 24784 bytes
SHA-256: fa1ef028e664d4e99bdab037b4debd10ddec41143538c5c84c25a0fed30b2aa6
font_01_sfnt_off00006e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E07 19556 bytes
SHA-256: 08b2a18d96b3566ec838f0e87c4bb916e955b8f8af04b9064418114d078945b8

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