Malicious PDF — malware analysis report

Static analysis result for SHA-256 be82e3a347435d30…

MALICIOUS

PDF

41.7 KB Created: 2021-05-11 06:46:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f5c5ccddbbc73426422cc07542c245ff SHA-1: 08025ad890ed5beb34b292d4c23902527ff8557b SHA-256: be82e3a347435d309272e82edbfd08248a0a1cd0a61410aed02f46f1877e76e0
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 0.9971

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-get-minecraft-java-for-free-game-hack PDF link annotation
    • http://www.lacarla.dk/images/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://www.lacarla.dk/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://www.lacarla.dk/images/www-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-free-spins-daily-link-updated_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_003_off00004984.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4984 24708 bytes
SHA-256: 41a98ac127551159d05b52293c778aa73f0a3ef89b3b73611292a79fd250213b
font_01_sfnt_off00008124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8124 18152 bytes
SHA-256: f45ec97da20a8e70f6e7437c3ced33d3bcbd99aef5af4daf3be0ff08d51a9e58

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