Malicious PDF — malware analysis report

Static analysis result for SHA-256 17c2b724a45e5c8f…

MALICIOUS

PDF

32.6 KB Created: 2021-06-18 12:23:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 31438d627a359f0a8d1f084bc7906975 SHA-1: b5420b2ac9ba707ff465581f68240272c5be61a2 SHA-256: 17c2b724a45e5c8fb854e16fabe6f9ded41693f09e35cf51e7a2875ff083ec51
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, identified as a link farm, that direct users to websites offering free game currency and hacks. The document body and extracted URLs suggest a lure for users interested in obtaining in-game items, likely leading to phishing or scam pages. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-gift-card-code-free-legit-game-hack PDF link annotation
    • http://suaedy-library.net/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-gui-hacks_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/pastebincome-robux-hack_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/hack-para-todos-los-juegos-de-roblox-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/hack-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3290 22516 bytes
SHA-256: f117e7810f7048b38461b83c1f175132d50c29b4ce9666540776247363ed7433

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