Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f6a8492f74a230e…

MALICIOUS

PDF

42.5 KB Created: 2021-05-13 22:38:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 45a2d5ed1f34c95a9a1b4fd10053e283 SHA-1: 1746e8ef3158cdd5442930071b6542b0279d0f93 SHA-256: 7f6a8492f74a230e21c778b83070747da01ccb7634278b2905e87443c30dbcb0
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/431946152/how-to-get-free-robux-without-any-verification-game-hack PDF link annotation
    • http://geometraperiotto.it/images/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/my-robux_GM431946152.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_off000046f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46F7 24996 bytes
SHA-256: 82e5807ed55d15fe4bd1a6853b48bea8a6b62880aac1441a4e24c0a3d790a60b
font_01_sfnt_off000080b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B1 19308 bytes
SHA-256: 301178d570ed694c8643ac68529098fd95120b57f2db1b64df12e7fbf37d492f

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