Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5f9a09e73a5f8ec…

MALICIOUS

PDF

42.0 KB Created: 2021-06-14 00:01:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6fe94b085be93adb67cccddfb8880f73 SHA-1: 1422879c7c298c653d055373ded31f9fecead9df SHA-256: c5f9a09e73a5f8ec8e78f6885c5850d0644ef1af65dffd95eb2c8d93cc0a5e75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious infrastructure, masquerading as a generator for game hacks. The document body and heuristics indicate a lure designed to entice users into clicking these links, likely to download a secondary payload or redirect to a phishing site. No scripts were extracted, but the presence of malicious redirectors and the lure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-hack-in-roblox-fortnite-game-hack In PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-free-stuff-pastebin_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-stuff-in-the-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robuxs-pate_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/is-there-a-free-coding-platform-for-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-adopt-me-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-ios-cheats_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/earn-robux-by-hacking-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-scythe-script-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4996 23892 bytes
SHA-256: c2475f67828dc1b6fced60a6f6acdd91b294a6c8f1e5f9481d26f8579f3a7697
font_01_sfnt_off0000805f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x805F 18736 bytes
SHA-256: 349310153f363d47c50b0dfd137ecb1be971321d1d145000520669aa59e1b585

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