Malicious PDF — malware analysis report

Static analysis result for SHA-256 572a61e5c3eb9066…

MALICIOUS

PDF

36.4 KB Created: 2021-07-03 22:55:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 7b552b6044ff1c8afbe17120ada0e743 SHA-1: f8862ea3202c99348177c5b4ba9c0b8d0fba62c7 SHA-256: 572a61e5c3eb90662e16477b22ee7cb3feb240344919e534ff598794b84de2c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free currency, directing users to a known malicious redirector URL. The document body and embedded URLs suggest a phishing attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious redirectors and lures indicates a high likelihood of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.tw/app/406889139/free-coin-master-hacks-no-verification-or-survey-game-hack In PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/roblox-gun-script-hack-r15_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/free-script-executor-roblox-2021_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/roblox-ninja-assassin-ninjutsu-hack_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/fort-wars-roblox-hack_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/roblox-captain-america-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/how-to-cheat-in-roblox-bad-business_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/get-roblox-items-free-chrome-addon_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/roblox-adopt-me-hack-money_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/roblox-free-badges_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/minecraft-ps4-code-free_GM479516143.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_off00003624.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3624 23172 bytes
SHA-256: 46daebf17685029a6c0221b28b98caca6662efb77a8bd59c063a86c634b0012c
font_01_sfnt_off00006a41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A41 18736 bytes
SHA-256: 5d883fbcba549dfc85d89aa60b08e322daf07c64f3e12c438afec793678b6e16

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