Malicious PDF — malware analysis report

Static analysis result for SHA-256 948cbe52ce71a464…

MALICIOUS

PDF

44.8 KB Created: 2021-06-09 11:01:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0d0fb14833defd56f4e355a5703071ad SHA-1: e34a5b673010c8dd823d9e5f9d1c528196f65509 SHA-256: 948cbe52ce71a4645ae40a33012b235b71f06ed379092a20cb1e442c9d20dcd6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free in-game currency or items to trick users into clicking malicious links. The embedded URLs, such as https://netcdn.tw/app/431946152/on-roblox-how-to-get-free-robux-on-ipad-game-hack, are identified as belonging to known malicious redirector infrastructure. While no scripts were extracted, the PDF structure and heuristics strongly indicate a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/on-roblox-how-to-get-free-robux-on-ipad-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/earn-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-case-clicker-hack-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/carding-for-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-today-glitch_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/minecraft-apk-114_GM479516143.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
stream_004_off000052b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52B2 24732 bytes
SHA-256: 05905ba4238822cf37a1bd52113c320a24e75918e5afa68716d96013d8edb3d6
font_01_sfnt_off00008a6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A6C 18932 bytes
SHA-256: d4a836756db6e450568b4f24cb8ea0a1154f0d023ac65f966f18e3f5862bd97d

Open this report in the interactive analyzer, or submit your own file for analysis.