Malicious PDF — malware analysis report

Static analysis result for SHA-256 b75d19b495551883…

MALICIOUS

PDF

35.8 KB Created: 2021-06-26 12:00:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 4a80ebf4e31d953a63d36976c45a1db7 SHA-1: 0915a6cc1e82b6966ecf61d00139f76f3562f489 SHA-256: b75d19b495551883ba8f067cfe2ebf9ee4a210be743db00f7cf50a90339715e4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, which is designed to lure users into downloading potentially harmful content related to games and hacks. The document body text and embedded URLs strongly suggest a phishing or scam attempt, likely to deliver a second-stage payload or lead users to credential harvesting pages. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/quel-touche-faire-pour-avoir-le-free-code-dans-roblox-game-hack In PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/hack-fhantom-forces-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-free-account-with-dominus_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-cheat-engine-noclip-lua-script_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/corrupt-free-roblox-torso_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-roblox-fan-clubs_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-chat-cheats_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/adopt-me-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-galaxy-wings-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-no-survey-no-human-verification-no-download_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/hacking-third-party-client-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-apocalypse-rising-2-hack_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3312 22240 bytes
SHA-256: 21adcf01b00b783090f38d24196b9fc9d7426ed0275adc8b0c960b309286b8c9
font_01_sfnt_off00006488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6488 19844 bytes
SHA-256: f7c07043d029eef76326fcaae4cf034ef24a74c6975ef5f7b3f8c504302f1689

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