Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3474e7e5eedb958…

MALICIOUS

PDF

23.5 KB Created: 2021-06-25 05:28:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: afd99fb5558b8bc8d59630da9acd0679 SHA-1: 2cfb7770ef933ae4a07a8e8840df61559007c109 SHA-256: e3474e7e5eedb9580f8b1e21016098a670d81b5586568f92aa8da64705ab093e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are flagged as malicious redirectors, specifically pointing to URLs associated with game hacks and free currency lures. The document body, though partially garbled, contains references to these lures and the malicious URL. The primary function appears to be redirecting users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 3

  • 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.
  • 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/479516143/is-java-minecraft-free-game-hack In PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-install-free_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/tiktok-free-play-online_GM835599320.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/noob-vs-pro-vs-hacker-roblox-bloxburg-build_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/creepy-free-roblox-t-shirts_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/irobux-fun-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/tiktok-free-nose-job_GM835599320.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-free-apk_GM479516143.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_off00003148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3148 21816 bytes
SHA-256: 879492965707012b15475452bebfd68e824679b781bcf15c63aea80e442e1992

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