Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d175c6332a5147…

MALICIOUS

PDF

45.6 KB Created: 2021-05-14 13:05:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 33bfbb0f28eeb3f3e2cdb157ac879dce SHA-1: 1e19bf3fb80bcfc496561f14ef039a61e168b208 SHA-256: 24d175c6332a514750df5cc2df2d9f7b4eaf2cf2d13d023baf1497173d6698c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and generators to entice users. It contains multiple links to redirector domains, including one identified as malicious, which likely serve as a gateway to further malicious content or downloads. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is part of a phishing or malware distribution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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 https://netcdn.xyz/app/479516143/minecraft-iphone-free-game-hack In PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/roblox-com-www_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • https://freegiftcodes.euIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e47.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E47 24628 bytes
SHA-256: 4bb957629a4d6766160023ffde0e57dd2d930bda982ae840e860384e63054c7c
font_01_sfnt_off000086be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BE 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off0000907c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x907C 18052 bytes
SHA-256: d64526d0e07d457868d5eac688c0bc3e5c9817b8b07646f1be3e20c76e1ff486

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