Malicious PDF — malware analysis report

Static analysis result for SHA-256 c15ab0c0d99bcfa0…

MALICIOUS

PDF

34.9 KB Created: 2021-06-19 02:36:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b7e6746de39fe92c0f4ea5896aadc78b SHA-1: d1008e0cbb39324a15bf618f577cce46654a5fa9 SHA-256: c15ab0c0d99bcfa0c393bde65b083990b47ada5cb772bb5be74a593e42c9dd9b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to entice users to click on embedded links. The primary link redirects to malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful sites.

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/free-robux-2021-generator-game-hack In PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-arcane-adventures-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/hack-sharkbite-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/robux-co-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-hacker-report-with-video_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-torso-position-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/www-roblox-passwords-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/hack-roblox-pour-rcupe-nos-compte_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/rbx-hut_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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
stream_002_off00003036.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3036 22476 bytes
SHA-256: d59ac8140fbe89faba44a98dd67cdd03dcf2a0d845fcbfe78bf49dd9d1a62c04
font_01_sfnt_off00006295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6295 19224 bytes
SHA-256: c4a833457c3d1d625364a3586ab572f2c76932d2f7c44384205d2ed542b8cd42

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