Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a98f7dbf5055060…

MALICIOUS

PDF

44.8 KB Created: 2021-05-17 00:08:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 75077650e4a329a8e64f12fa49186d9d SHA-1: 0faaf470b16e01e7858c82368d50f45f0d91df88 SHA-256: 0a98f7dbf5055060b4cf5b12d69b4c9b481c573c2b8b4ef8270df66fed7c3289
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains lures for game hacks and free currency, directing users to a malicious redirector URL. This redirector, in turn, serves further malicious PDFs hosted on `malungtreks.com`. The document body and heuristics indicate a clear intent to trick users into downloading or accessing potentially harmful content through deceptive links.

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 https://netcdn.xyz/app/431946152/get-free-robux-no-human-verification-game-hack In PDF document text
    • https://malungtreks.com/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-face-roblox_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-roblox-codes_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/robux-sites_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/can-i-have-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_off00004ab9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB9 27464 bytes
SHA-256: eab53bcb82b264565f7f993dc10f33babf8bd00f23e144d58b3ed6e9eced75f4
font_01_sfnt_off00008b54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B54 18860 bytes
SHA-256: 77094cb8e4b41d81131149df95963a95cd1356d500cc75fcdf894a2f9afc6be7

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