Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e30b0ee3ea31b4a…

MALICIOUS

PDF

33.6 KB Created: 2021-06-29 19:58:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 73553cab2950e1d29abecaffdaccb43e SHA-1: 6d6abb608590b1a56730fd7efc8af443ac5ca1ae SHA-256: 3e30b0ee3ea31b4a726d196209b8affc6ac6b4d64ec6a062d9e25c60dd828dfa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'free Robux' and 'game hacks' to lure victims. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely designed to lead users to malicious websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection as the primary attack vector.

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/free-robux-cheats-roblox-game-hack In PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-draw-2_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-generator-straight-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free4mobile24-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-codes-2021-mobile_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-make-free-robux-with-bc_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-phish_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-roblox-catalog-items-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-avatar-stuff-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/face-added-by-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-infinite-robux-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-roblox-in-three-simple-steps_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-free-robux-free-robux-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002ce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE0 22156 bytes
SHA-256: 4d2dc151911c98184005964670d7b3842468ee96c23d2a8e84d4002763db3601
font_01_sfnt_off00005e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2B 19060 bytes
SHA-256: edf041e3a13adcd04de623daab77366acc77b98e4d62929301c9267f5eaeefe9

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