Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f9977c93efb5fd1…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 08:19:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 233d7553506e50bfe2acecb3d1a0b297 SHA-1: d8173ac40799632814ec69a163d641c18e07c224 SHA-256: 7f9977c93efb5fd149f416089ba4d3df30d8cd37bef5f90758ea04a09a9d413d
160 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and generators, directing users to a known malicious redirector. The embedded URLs and the document's content strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the PDF structure and embedded links are indicative of a malicious redirector chain.

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/boku-no-roblox-hacked-game-hack In PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-forum_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-forumcom_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-offer-website_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hes-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/donne-du-t-shirt-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-no-human-verification-no-survey-2021-no-password_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-aout-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/chams-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/aresenal-hacks-scripts-for-roblox_GM431946152.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_002_off00003069.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3069 22588 bytes
SHA-256: 804ec16d75acd818ed241a4ea28e2da0db366796e9564a2d99f560d123fb49e7
font_01_sfnt_off000062ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CE 18972 bytes
SHA-256: 741c4610d250c80d83e94af1ea82b3fda413b47fbcb18a2b0eb7c6d3366f9bb9

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