Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b0b68771b5e9da0…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 19:23:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fc5073fcacb7e001bb886fa8933d2229 SHA-1: 8127b0747e817bb4d8a90d813705d95ef41901fb SHA-256: 8b0b68771b5e9da09e49c0d974bc1b29f55f7d348be490ee49e964a265ece787
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a malicious redirector. The primary lure appears to be related to game hacks and free currency, suggesting a phishing or scam attempt. The document's content and embedded URLs strongly indicate a social engineering tactic to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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/coin-master-free-spins-link-2021-download-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-get-roblox-on-windows-10-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/redeem-roblox-promotions-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-anthro-paid-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/dessert-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-granny-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-hack-in-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/wwwfree-face-on-robloxcom_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/no-verify-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-jailbreak-editor-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-account-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-get-free-robux-with-codes_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-natural-disaster-fly-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-get-the-penguin-suit-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/get-free-robux-without-human-verification_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
font_00_sfnt_off00002ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE4 22544 bytes
SHA-256: 6be9beaa8b489a82f24f953820ef5beed85ffb14daf3df8511c2d21a693080b7
font_01_sfnt_off00006146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6146 19328 bytes
SHA-256: c9456106261516b9bfa0d3ee3152032b43a61c3b63827a777d443b4b8c7c4270

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