Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ac3722ddcc70bb…

MALICIOUS

PDF

33.9 KB Created: 2021-07-08 01:46:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6e9628285389c3371351b77c87089486 SHA-1: c8451cd0fbca670e2d4471bf46b694629eedfd65 SHA-256: a7ac3722ddcc70bb21b628c9cb22ba0154c9c3f162f1d607347a6b759c2f9b9f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free game hacks' and 'robux'. The primary lure appears to be a scam designed to trick users into visiting potentially harmful websites. While no scripts were extracted, the PDF structure and embedded links strongly suggest an attempt to exploit user interest in gaming cheats to deliver a payload or lead them to a phishing site.

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/479516143/is-minecraft-bedrock-edition-free-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robloxcom-free-kkk-k-k-k-k-m-k_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hacker-roblox-fr_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-case-clicker-20-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-in-roblox-martial-arts-battle-arena-kai_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-hack-computer-no-app-download-computer-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-mobile-hack-ios_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-legends-of-speed-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-for-robux-just-but-ur-username-in_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-synapse-x-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-roblox-using-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-things-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-earn-robux-without-cheats_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/robux-earning-sites_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/the-free-robux-generator_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_off000030a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A6 21996 bytes
SHA-256: 847fbe21170a5bf2c698e50d3f8b6c0b91f1cb2a1aa6dc804b98ff628bcf242a
font_01_sfnt_off000060fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FE 18560 bytes
SHA-256: 8c2aade69ad879b6b8c52caec59c1b00876ea4d1a7a1da7d8dbd37bdf8bae558

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