Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbb493647d7cef1a…

MALICIOUS

PDF

35.8 KB Created: 2021-06-26 13:42:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8f420e58cbe8047e14836c415399dda9 SHA-1: 247b49d79d8a825ca95693f02ee196e211448616 SHA-256: bbb493647d7cef1a1488f17a72633792eed8a2cdf9bd5cbcdb9cd5b9efe81506
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free items to entice users to click on links. It contains numerous links to redirectors and link farms, including a primary malicious redirector at http://netcdn.co/app/431946152/roblox-jailbreak-hacks-transparent-game-hack. The document body and heuristics indicate a phishing or scam attempt leveraging popular game titles to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-jailbreak-hacks-transparent-game-hack In PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/how-to-hack-roblox-mad-city-gui_GM431946152.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/injecthack-com-roblox-hack-injector_GM431946152.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/roboxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/win-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
font_00_sfnt_off000032b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B5 22912 bytes
SHA-256: c997638ac4343f1ae6050e8c6055a81b6dde6c82d6f24293fa2d64ebeab6b494
font_01_sfnt_off00006659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6659 19224 bytes
SHA-256: 127e0735fbb2ef68dd648c5712731c26dd719eddc17e67a805e2ed4b68bd0ed7