Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07be125d9c39b06…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 00:51:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 69f2459030735faf1a0f8e5573db2c69 SHA-1: ef6a6862695c457ed55f16b1da5c75e7226662c9 SHA-256: d07be125d9c39b068b10971ee1ac946458ebf1e2b957fe93a738d581fd23f0bc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious redirector. The document body and embedded URLs reinforce this, indicating a social engineering attempt to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for client-side exploitation or further payload delivery.

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/479516143/minecraft-noob-vs-pro-vs-hacker-vs-god-game-hack In PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/roblox-66-hack_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/robux-claimer_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/vheachle-simulator-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/roblox-speed-hack-codes_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-robux-links_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/robux-gratis-sin-hacks-2021_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-give-urself-items-in-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-robux-using-lucky-patcher_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/good-roblox-booga-booga-websites-to-hack_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_off000033fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FB 22512 bytes
SHA-256: 11a4caf10f0e76b7361a6306d18237f3381f4b67f722792d1c58a74826a4f171
font_01_sfnt_off00006534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6534 18788 bytes
SHA-256: 73ec6ac80df223acd40be2e0a99cbfcc02b9dc3858d0872440f8b03ec1d9f2fc

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