Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a2444cb23b2acaa…

MALICIOUS

PDF

34.2 KB Created: 2021-07-01 23:45:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 73493e945d474f382bd2fb0ad27f81cf SHA-1: 72c28b0b756a4d7ddbbc46240eb0ad50f963a710 SHA-256: 3a2444cb23b2acaab369c5fd4071c217af1090c06e07fbfc1f147464b64c6f1c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of free game hacks and currency to entice users. It contains multiple links to redirectors, including http://netcdn.co/app/431946152/free-one-piece-roblox-character-game-hack, which in turn host other malicious PDFs. The ML classifier also strongly indicated maliciousness.

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-one-piece-roblox-character-game-hack In PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/hack-cojer-cosas-del-catalog-sin-tener-robux_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-wallpaper-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/roblox-robux-hacks-2021-working-no-scam_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-robux-codes-prank-code_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-yo-hac-roblox-and-get-a-key-card-hack_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-minecraft-skins-pe_GM479516143.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_off00003035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3035 21932 bytes
SHA-256: 81069a9fa398cf8ea35eeda0d5ae7d4ff720c27f1e9195c0f75d662a284955e7
font_01_sfnt_off0000607f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607F 19196 bytes
SHA-256: 346781dbb3713ce585c96cc03d52aa95c9f1329e90e2c8855d95d623b4f75170

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