Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2157f97505902e6…

MALICIOUS

PDF

35.5 KB Created: 2021-07-06 14:38:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4c455e6fd2299375daa4ecaaa233b442 SHA-1: c01f37273043482b36a55fe96f20198266d0e840 SHA-256: c2157f97505902e6a1f52dbd67bc6efee82e81830ab98e39644a5af5b0f5c8ad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it is a malicious redirector lure, specifically targeting users interested in game hacks. The document body and embedded URLs point to a link that is classified as malicious infrastructure. This suggests the primary goal is to redirect users to a potentially harmful website, likely for further exploitation or credential harvesting.

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/coin-master-free-cards-link-2021-today-game-hack In PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-script-hack-trading-game-simulator_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-gift-codes-for-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-geaar-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/apocalypse-rising-hacks-roblox-crash_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-codes-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/guuddinfo-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/best-script-for-hacking-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-roblox-short-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/tix-factory-tycoon-paquet-tix-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/youtube-fly-hack-roblox-2021-feb_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/infinite-jump-hack-for-roblox-devs_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/minecraft-bedrock-hacks_GM479516143.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_off000031f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F8 23060 bytes
SHA-256: c3377c2bbeb4fde09850c7ec5ffd4a34066326ac79b382a43caf76433ae2388a
font_01_sfnt_off00006600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6600 18924 bytes
SHA-256: 4325d22604c985801318a09856abb239b71478aaf8f7ce5bde155a72b560a462

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