Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9a66e8a54febb5…

MALICIOUS

PDF

34.6 KB Created: 2021-07-02 07:41:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e4da6bf63f56521ad0e5b74a78762935 SHA-1: 0a0a2fa85438e31c87e501ba45d45fdb9e3a582c SHA-256: 5e9a66e8a54febb5537d3ed0a94a17b1399d282851bb2b8ec64bb5c66fd64f07
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' content related to Roblox. The ML classifier also flagged this PDF with high confidence. The document body and embedded URLs indicate a lure for users seeking in-game advantages, which is a common social engineering tactic to drive traffic to malicious sites. No scripts were extracted from this sample.

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/431946152/2021-roblox-accounts-free-game-hack In PDF document text
    • http://lib.stie-aub.ac.id/repository/how-do-u-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-long-of-a-ban-on-roblox-for-hacks_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-level-7-exploit-roblox-no-virus_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-logo-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/assassin-roblox-cheats-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-pubg-uc-free_GM1330123889.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-accounts-with-robux-december-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-minecraft-alts_GM479516143.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_off00002ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE7 22440 bytes
SHA-256: 4625b7f348b7b961e3f704422aefb6df22fc3ba3b994e27627e5f2a6e6df5080
font_01_sfnt_off0000612f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612F 19296 bytes
SHA-256: 71a943f0ef13e9a51d41fdc013aa919b040b55adab653b55477c96795271c7a0

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