Malicious PDF — malware analysis report

Static analysis result for SHA-256 32810492cea00ea2…

MALICIOUS

PDF

35.8 KB Created: 2021-07-08 14:29:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 46f0bf4b31fa19ed6f4beda521cd4533 SHA-1: a7ae123ea1b8e57dc2b0e7f120fcc269099a423e SHA-256: 32810492cea00ea260c6f50142804bf7dc82a4ba6e70d878166b0a9265afcb06
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded links that lead to a known malicious redirector infrastructure, specifically advertising free game hacks and currency. The document body and heuristics indicate a lure designed to entice users to click on these links, which likely serve as a delivery mechanism for further malicious content or phishing attempts. No scripts were extracted, but the presence of malicious links and the lure strongly suggest a phishing or malware distribution attack.

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/unlimited-coin-master-free-spins-game-hack In PDF document text
    • https://vierabyragazze.com/upload/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/master-hack-coin_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-ban_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-how-to-get-free-packages_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/como-tener-robux-gratis-facil-y-rapido-sin-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/pastebin-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-net-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/clicksfly-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/john-doe-roblox-hacker_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_002_off00003302.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3302 23376 bytes
SHA-256: 0de6a84832f58194c994330d7543e389290ec29c1f537e83711aa570f75c640a
font_01_sfnt_off000067fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FB 18868 bytes
SHA-256: 2614a93aa226769b9bcda9f2b70c854a7220d675dfa99f6f802674302d402f76

Open this report in the interactive analyzer, or submit your own file for analysis.