Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce551c5e6d4e30d8…

MALICIOUS

PDF

32.8 KB Created: 2021-06-28 23:30:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 8f8dfd670949074401292eba88f37fc7 SHA-1: 1da7496a42956c54562bf6f05950437c9bc71e5d SHA-256: ce551c5e6d4e30d804a3888a3c88ab7609c00043137874092b38ac83a66e962e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to known malicious redirector infrastructure. The document body explicitly mentions 'free generator / game hack' and 'Robux Generator', indicating a lure for users seeking in-game currency or cheats. The primary goal appears to be directing users to potentially harmful websites that may host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/how-to-get-the-penguin-suit-in-roblox-for-free-game-hack In PDF document text
    • http://library.umuslim.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-bubble-gum-simulator-cheat-codes_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-free-robux-and-tix_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hacks-for-roblox-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/cheat-engine-16-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/www-robux-us_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/robux-hack-without-survey_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/expensive-avatar-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-free-robux-maps_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/cheat-roblox-2021-phantome-force_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/20-free-spin-link-coin-master_GM406889139.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_off00002aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AEE 21644 bytes
SHA-256: 23c7f60497483205719170f66ebb4e110bb9b76eac4ead0db9bb1f65fe6f3bf1
font_01_sfnt_off00005a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5B 19500 bytes
SHA-256: b8c08a36b1c12d6186955aa23758bb0cff6691d5d6dd13c3fec40d4d9b8186ed

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