Malicious PDF — malware analysis report

Static analysis result for SHA-256 974e4b58c832377b…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 01:18:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6727d5370d39bc883ea64fdaaffc5dbc SHA-1: 84edd5a3414121bed698e4a42ecf1f24b2827385 SHA-256: 974e4b58c832377b1a5cba8eedf157e281868719b43f7e0996267512e5c9fd67
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically promoting 'free generator' or 'game hack' lures. The document body and embedded URLs suggest a phishing attempt focused on popular online games and virtual currency. No scripts were extracted, but the presence of malicious links indicates a high likelihood of leading the user to a compromised site for further exploitation.

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/431946152/800-robux-for-free-2021-game-hack In PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/download-roblox-free-windows-xp_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/black-magic-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-no-human-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-code-generator-no-download_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-dragon-ball-rage-stats_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-on-phone_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
font_00_sfnt_off00003052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3052 21948 bytes
SHA-256: cda46e83271c9c68ceb15b3f4604df37a3e5b074c3c0e809521d49b7f03778e2
font_01_sfnt_off000060bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BC 19328 bytes
SHA-256: 2e11ebdfbad68eb5050b38ad43e95c0f62e8805927ed49e2654a4eec3358554d