Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcfa2ca2beb6887a…

MALICIOUS

PDF

47.7 KB Created: 2021-06-10 19:44:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: a251db57e9a719a61ed877c5113a4a1b SHA-1: 10bc85d2314713649103df8f941eea7e7528efc2 SHA-256: bcfa2ca2beb6887a92726282ebaba26209a1e6b2aed7d045b45b311de07631df
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically leading to a URL associated with game hacks. The ML classifier also flagged this PDF with high confidence. The presence of a visual download button further supports the lure to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 3

  • 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.tw/app/431946152/adopte-me-hack-project-alpha-3.0.0-roblox-game-hack In PDF document text
    • http://library.forda-mof.org/katalog/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-cheats-for-ninja-similar-xbox-one_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-cheats-for-free-builders-club_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-mazda-2021-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-subscribe_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/www-roblox-com-robux-free_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
stream_004_off00005304.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5304 28420 bytes
SHA-256: fb2b4a598afd94958b90be13ba4aecc4985efa291c6384538a7cb52a5e4e12ae
font_01_sfnt_off00009381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9381 19752 bytes
SHA-256: d3fc49334de87592a07ff6b06c1d784d4f08ad6a8422a196f43749fdeb84aec4

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