Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f040ea724edf5e6…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 15:30:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 895a0a31a3b0c1c6477213339f448571 SHA-1: 6af20464912907dedc33181b6eb7d98801839ed7 SHA-256: 9f040ea724edf5e60c7aed909532d98bfb6d7d07c66b7fb37c9bee3749195904
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a call-to-action phrase, directing users to a known malicious redirector infrastructure. The primary lure is related to obtaining free Robux or game hacks, indicating a phishing or scam attempt. No scripts were extracted, but the presence of malicious links and the lure suggest a phishing campaign.

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/431946152/how-to-get-free-robux-without-offers-game-hack In PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-redvalk-code-free_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/cheat-engine-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/notoriety-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-hack-power-training-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/hacked-roblox-servers-flamingo_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/best-free-roblox-schirts_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-codes-2021_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_off00002e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E78 21764 bytes
SHA-256: fa1c1946cd400195fd83ade2f70e08f3a51b70ccffbe9234da7d781dee081fd5
font_01_sfnt_off00005e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E64 19468 bytes
SHA-256: d293dc8b17a4ec261e56b386a82f7f63f23481516d807023c0ef4741d16fdc92

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