Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c26a88a7674f5f2…

MALICIOUS

PDF

42.2 KB Created: 2021-05-15 14:54:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 12406027dee7f221718dbb401e6d1bb4 SHA-1: 1a0ae4aa34fcfba5bf159deca4945f2e05bfb2ae SHA-256: 6c26a88a7674f5f23d2ccf22dc96909363f44f9a2fea97ee883e5f0d19ae5d63
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/406889139/coin-master-online-hack-2021-game-hack PDF link annotation
    • https://willifox.com/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://willifox.com/images/com-roblox_GM431946152.pdfIn PDF document text
    • https://willifox.com/images/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://willifox.com/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://willifox.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://willifox.com/images/hack-avatar_GM431946152.pdfIn PDF document text
    • https://willifox.com/images/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://willifox.com/images/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://willifox.com/images/20210-robux_GM431946152.pdfIn PDF document text
    • https://willifox.com/images/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://willifox.com/images/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • https://willifox.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://willifox.com/images/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://willifox.com/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://willifox.com/images/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://willifox.com/images/open-coin-master_GM406889139.pdfIn PDF document text
    • https://willifox.com/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://willifox.com/images/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://willifox.com/images/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://willifox.com/images/free-spin-and-coin-blogspot-com_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_off00004acd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ACD 24484 bytes
SHA-256: 1221b65f2046da83e458b8c2a5417a9a0912f88b27b2dbe4b4e63c9bceb96e02
font_01_sfnt_off000082cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CD 18192 bytes
SHA-256: c749125a48438900fb9d2e9c83f982021f7c7aadfa00f74e48b95002be6a303d

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