Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad9280c6f52b08c1…

MALICIOUS

PDF

45.8 KB Created: 2021-05-16 17:45:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 7160681843dc12db1aa4ce6fef775385 SHA-1: 0ed45dcb33fb5e52435d32d25b0ee35c7212e38f SHA-256: ad9280c6f52b08c163fad8d5a3f25ffecd8ca43177d3dcd8e999ff66891ebc96
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to redirector infrastructure, specifically promoting 'game hacks' and 'generators' for popular games. These links are designed to lure users into downloading malicious files. The ML classifier also strongly indicated maliciousness, supporting the observed redirection and lure tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-survival-hacks-game-hack In PDF document text
    • https://begavalleymealsonwheels.org.au/images/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/get-more-robux_GM431946152.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/oprewards-login_GM431946152.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/minecraft-free-education_GM479516143.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://begavalleymealsonwheels.org.au/images/coin-master-daily-spin-link-app_GM406889139.pdfIn 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_off00004cac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAC 25652 bytes
SHA-256: 27c1996690d6ee146da3236a799afe5a9099772d80420d546beb05e05271829e
font_01_sfnt_off00008749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8749 2952 bytes
SHA-256: b1efcc38418e79d269439e7910a1f7634ea8c321b71b58517f1a7300d5f7088f
font_02_sfnt_off0000917f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x917F 18064 bytes
SHA-256: b356890df1a237005749e25630c39dae3f7a9062fb148157208e134e16779e55

Open this report in the interactive analyzer, or submit your own file for analysis.