Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee3857a28227b9e…

MALICIOUS

PDF

35.1 KB Created: 2021-07-02 03:38:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ce5a8f37732714dc111365505c5ac1fa SHA-1: de6f12aeb170c95eb58dc963f16cec02a04c3bf2 SHA-256: bee3857a28227b9efca67f705dc0c320825bf1b7274fe20e4f19a0b87ba49e0a
160 Risk Score

Malware Insights

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

This PDF document contains multiple links that lead to known malicious redirectors, specifically advertising game hacks and generators. The document body and extracted URLs suggest a lure for users seeking in-game advantages, which is a common tactic for distributing malware or leading to phishing sites. The ML classifier also strongly indicated maliciousness.

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/roblox-button-simulator-3-hack-script-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/hack-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coinmaster-links_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-work-at-a-pizza-place-cheats-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/the-cheat-code-in-roblox-wonderland-games_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/pepsi-hacks-roblox-script-cbro_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/emperor-hacks-roblox-discord_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-cheat-engine-august-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-inject-dll-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/go-to-this-website-for-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-online-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/https-growbux-net-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/robux-hack-2021-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-protosmasher-free-download_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-2021-without-verification_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_off00002ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE2 22980 bytes
SHA-256: bf051edf7414f1a72a9a160256685ebdc278cb7d9001b610b91e62ecd065082d
font_01_sfnt_off0000627c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627C 19632 bytes
SHA-256: dcb4c1bdbef496c886f615a97f95f277f5322c8629d5236a46bf0d4b70aa682e

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