Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ca696800cac591d…

MALICIOUS

PDF

32.7 KB Created: 2021-06-20 20:59:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b67f59d8eccd325e7bcb356b177f723b SHA-1: 464942b6ed1f1689fd0c5231e841c1be7257d61a SHA-256: 3ca696800cac591d94866289ea24b31fb8cdaa29a946526f2b682715696951cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector. The document body and heuristics indicate a lure for game-related cheats or currency, directing users to potentially harmful websites. No scripts were extracted, but the presence of malicious redirector links and the lure suggest an attempt to lead users to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/roblox-com-free-promo-codes-game-hack In PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/robux-offers_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/genarater-that-gives-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/minecraft-font-free_GM479516143.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/blue-wistful-wink-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/cheat-engine-2021-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off00002aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA3 21828 bytes
SHA-256: f42ba854c20da2e3363b2e04904e32ef1dbf2f1ea55d23379031c9d5c578f5e9
font_01_sfnt_off00005ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB3 19236 bytes
SHA-256: 67800029804104c64caf7fd3d796affbc21b615be4278f0e7829b0deae2ba203

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