Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dd5b2ecc59e2a66…

MALICIOUS

PDF

35.3 KB Created: 2021-06-27 10:43:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 39e4b0d542dea1c5fd8d1c9ef5f74c90 SHA-1: fb685ec34edbfc794e374ce53665a9d689e2955f SHA-256: 5dd5b2ecc59e2a661c204066dba4d6e4c38d86594854c2b3cee0365b1190123d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to potentially malicious websites, masquerading as 'free generators' or 'game hacks'. The primary lure appears to be related to 'Robux' and other game-related cheats. The document body and heuristics indicate a clear intent to redirect users to external, untrusted infrastructure, likely for further exploitation or phishing. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/testing-5-ways-to-get-free-robux-game-hack In PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/what-is-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-a-free-hoverboard-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-no-scam-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-free-ninja-animations_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/pokemon-go-free-pokemon-hack_GM1094591345.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/brother-cheating-on-his-roblox-girlfriend_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/de-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-do-i-change-my-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/royale-high-school-roblox-free-play_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-hack-roblox-accounts-2021-easy_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_off00003234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3234 22316 bytes
SHA-256: 2e672ce7f6f2ef97b0913e84db47b3fbce04b9f01193c2144d49b6f4c330f52f
font_01_sfnt_off000063c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C0 19452 bytes
SHA-256: ccd5985f07c1b8e138ee1688d854133359843bb1eace058dbe43528ae47e636a

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