Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e3425125756716…

MALICIOUS

PDF

34.1 KB Created: 2021-07-07 16:43:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 8e5c644bc6f5e0a84587207c7a0471a5 SHA-1: cfb94ab77472db9fb79e23bdb80afc0c707e3361 SHA-256: b2e34251257567160e7e0a21c2e34279960a0689579efef5d00de02acf0ad6bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are flagged as malicious redirectors, specifically leading to game hack and generator lures. The primary URL, http://netcdn.tw/app/406889139/coin-master-hack-spin-game-hack, is a key indicator of this social engineering tactic. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting malicious 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.tw/app/406889139/coin-master-hack-spin-game-hack In PDF document text
    • http://digilib.iailm.ac.id/repository/descargar-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-on-2021-ouick_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/auto-speed-hack-legends-of-speed-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-cards-2021-march_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/como-tener-hacks-en-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacking-menu-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/city-architect-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-unused-roblox-card-codes-2021-and-not-fake_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-hack-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-unlimited_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spin-and-coin-links_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_off0000324c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324C 21992 bytes
SHA-256: 40f068ab05fc06a50e6c42f98e1f65524ce6ece62d686129c117b09482c5fecd
font_01_sfnt_off000062c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C0 18180 bytes
SHA-256: 8089ec70024e38c963cd1b8e4fd66f251d2ac35f3e2526171ef4435f22e5a9e0

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