Malicious PDF — malware analysis report

Static analysis result for SHA-256 141fe889d17aa36d…

MALICIOUS

PDF

33.3 KB Created: 2021-06-27 17:19:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a5a53a67918155496b83c259fc811aa3 SHA-1: bb567556147079be76113d8aee0a6c426faa1d5c SHA-256: 141fe889d17aa36dd5aeceab38ab7d0894af4113e75c1b4ba9723d0cb65c87f4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a lure related to game hacks and free in-game currency, specifically targeting popular games like Roblox and Coin Master. It contains multiple embedded URLs that point to redirectors and potentially malicious content, indicating a phishing or scam campaign. The presence of a malicious redirector link and the ML classifier's high confidence score support this assessment.

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/how-to-send-proof-of-hacker-on-roblox-game-hack In PDF document text
    • http://library.patria-artha.ac.id/repository/online-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/javascript-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/can-you-get-roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-free-obc-codes_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/balloon-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-pizza-cheat_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_off00002d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D57 21632 bytes
SHA-256: 1e0d2e2a58e9907eafc318d2284fd21f964dd8c694faf3f47f07039b12f2a6a1
font_01_sfnt_off00005ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA7 19148 bytes
SHA-256: ccf74c325152b9ffc9c059e6d96f38b1a56308ca5c56e0e042a0f9506b85e89c

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