Malicious PDF — malware analysis report

Static analysis result for SHA-256 e880080de6d8fac0…

MALICIOUS

PDF

34.0 KB Created: 2021-07-08 12:30:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 27d6aa849f7f373bf042df58a2ca5d4a SHA-1: 701bd8f21ddc6c6e3fd49861f3b6c3137f7cb857 SHA-256: e880080de6d8fac00db3b07efcf0b41ce5fba9655b6d522298567c00e604a067
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically targeting users with lures for game-related cheats and currency. The heuristic firings confirm the presence of malicious redirectors and a lure for game hacks. While no scripts were extracted, the embedded URLs and document content strongly indicate a phishing or scam attempt designed to lead users to potentially harmful sites.

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.tw/app/431946152/give-me-robux-game-hack In PDF document text
    • http://razredna-nastava.net/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-cool-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/clients-minecraft_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-free-abs-t-shirt_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-hack-rc7-download_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-100-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/robux-claimer_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-hack-unlimited-robux-and-tix_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-animation-packs-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/hacks-para-roblox-jailbreak_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_off00002cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD7 22684 bytes
SHA-256: 51250c28e12aecb02876ee21fd95c696be1cd584f61a0c16cb77dbb1a248feb2
font_01_sfnt_off00005fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB1 18984 bytes
SHA-256: 4e46e4fba873faa5c118d7fc25cc80c06536480829301173d0374a806a09fbcf

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