Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c60ad839a6d03cc…

MALICIOUS

PDF

42.2 KB Created: 2021-05-11 13:39:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 705b177a0a2a79e18fdc2b74e986a599 SHA-1: 1e500d8ded66904176db7d8f258ddf533033e913 SHA-256: 9c60ad839a6d03cc885c7fb69b9949a75355096e2f12e6d0874b0ea8a13bb3b0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites promising game hacks and free currency, a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of external URI links further supports a malicious intent. No scripts were extracted, but the document's structure and embedded links indicate it's designed to trick users into visiting potentially harmful external sites.

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/watch-ads-for-robux-game-hack PDF link annotation
    • http://geometraperiotto.it/images/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-support_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/my-robux_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://192.168.0.99/%20%3Cp%3E%3Cp%3EUse%20ROBLOX:%20HACKED!%20and%20thousands%20of%20other%20assets%20to%20build%20an%20immersive%20game%20or%20experience.%20Select%20from%20a%20wide%20range%20of%20models,%20decals,%20meshes,%20plugins,%20or%20audio%20that%20help%20bring%20your%20imagination%20into%20reality.%3Cp%3E%3Cp%3Ehow%20do%20you%20get%20free%20robux%202017%20july%3Cp%3E%3Cp%3Eroblox%20vehicle%20simulator%20cheat%20engine%3Cp%3E%3Cp%3Ehow%20do%20you%20get%20free%20robux%20no%20vidio%3Cp%3E%3Cp%3Efree%20robux%20google%3Cp%3E%3Cp%3EYouTube%20is%20an%20American%20online%20video-sharing%20platform%20headquartered%20in%20San%20Bruno,%20California.%2099%20and%2052.%20But%20ThomasIn 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
font_00_sfnt_off00004a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A85 24504 bytes
SHA-256: ca297d689df44ead0d89d429ae9c3c12755142e3eccdd9d81ad29061a853ecfd
font_01_sfnt_off00008269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8269 18320 bytes
SHA-256: 9cfef03b04bd7c1bdd2769c31a096cefe6282974dddda36ef5b60a3290ad829a

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