Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7aadb7aea1dd9a…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 16:28:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a40bc9e26eab5de4445736f55d819db8 SHA-1: 6e3105404e160bd5845aa2d5b9a9b0f2403a9cd3 SHA-256: 2f7aadb7aea1dd9a8e6c11673f7099cf1d9bf67e9f5ade9a7b81bcdedaad6bb0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector, leading to game hack generators. The document body and embedded links suggest a lure for users seeking in-game currency or cheats. No scripts were extracted, but the primary attack pattern involves social engineering through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-coins-game-hack In PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/minecraft-tools_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/wurst-112-2_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/how-to-get-free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.andrology.co.uk/uploads/files/files/free-spin-link-for-coin-master-game_GM406889139.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
font_00_sfnt_off000051a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51A5 25100 bytes
SHA-256: 75ceb3f3cb53cb2378b12b1f6e8e166a2367a2822ca8b75838ca29496d2b5bbc
font_01_sfnt_off000089f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F1 17544 bytes
SHA-256: 5ee316c89f58fa7ece53e10d1822e70a80b2e7ece9f31707ca69690d36fdc75d

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