Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f099bee0fc33600…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 10:45:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c0a216c97356afa853727aee841c951e SHA-1: 05232af08cf0c479f38d31155c8280716c231ac4 SHA-256: 3f099bee0fc33600a9b5d4d40509143fe867400298a2ec931aa49e0de21a8c0f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, which is designed to lure users into clicking on it by promising free game items or hacks. The document body and heuristics indicate a social engineering tactic to drive traffic to potentially malicious websites. No scripts were extracted, but the presence of embedded URLs and the nature of the lures suggest a phishing or scam attempt.

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/406889139/how-to-get-free-pet-food-in-coin-master-game-hack In PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-how-to-get-free-robux-in-games_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/robux-robuxian-awesome-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/roblox-halloween-outfits-free_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/tiktok-free-likercom_GM835599320.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/new-code-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-get-loads-of-robux-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-robux-without-survey-or-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-make-a-roblox-bot-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-get-free-unlimited-robux-glitch_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/rbx-earn_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/the-cheats-mac-roblox-free-robux_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_off000031d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31D1 23456 bytes
SHA-256: e793602cf0c9d43e243739debc1cd82a77dab99498356623244be3569c2f9912
font_01_sfnt_off000066d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D2 18492 bytes
SHA-256: 3b8d0933b66d4a3ba90188940e5d7ed21cf944b8acae8725630a3c3be9b63f2c

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