Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d165fdc8bbf55a0…

MALICIOUS

PDF

35.5 KB Created: 2021-06-19 21:29:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e683316eabcdf1690caf45d90342dcda SHA-1: e87ef3b689f9e4062538e2190782e928bcd1ec73 SHA-256: 4d165fdc8bbf55a02f629456c38184009375b9a478405cc81aa4526c5ee87874
160 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and generators, directing users to a malicious redirector URL. The redirector likely serves further malicious content, as indicated by the presence of multiple related PDF URLs. The ML classifier strongly flagged this sample, and the embedded links are associated with known malicious infrastructure.

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.co/app/431946152/how-to-use-speed-hacks-in-roblox-game-hack In PDF document text
    • https://lib.insan-unggul.ac.id/repository/video-de-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-hack-denis-roblox_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-hack-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/static-moonactive_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-cheats-client_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-do-you-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-hack-no-survey-2021_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-blox-piece-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-robux-hack-online-generator-tool_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-person_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-game_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-spins-on-coin-master-hack_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_off00003277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3277 22604 bytes
SHA-256: 24ad59ad330d991087fb765de331b4274bf52cdb7776a2b0980ee700d848ac1f
font_01_sfnt_off0000653e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653E 19168 bytes
SHA-256: 5ba2c11e271bf363fe43b3942c61d4b78724f4605089e5109903ace8d5dc0e45

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