Malicious PDF — malware analysis report

Static analysis result for SHA-256 570535215ebc0689…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 09:45:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 625fbee0031a89bef855b02e38a0996f SHA-1: 3021e6798ec5465ea911017e8788cae254bb3f60 SHA-256: 570535215ebc068996c81c2f46c25f3adae9273619f398756b5f3c45e49cb303
160 Risk Score

Malware Insights

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

This PDF document contains multiple links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary lure appears to be related to 'Roblox Free Printable Coloring Pages' and game hacks, designed to trick users into clicking the embedded links. The ML classifier also strongly flagged this PDF as malicious. The document's purpose is to redirect users to potentially harmful content or further malicious downloads.

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/roblox-free-printable-coloring-pages-game-hack In PDF document text
    • http://slim.sisminkada.net/repository/rogue-roblox-aim-bot-cheat_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/cheat-engine-la-roblox-para-hilesi-nasil-yapilirir_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-cloting-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hack-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-roblox-female-clothes_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-be-a-vip-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/10k-likes-on-tiktok-free_GM835599320.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-cheats_GM406889139.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_off00003234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3234 22040 bytes
SHA-256: c30a01313cb1c384d165084ec8ace1c92cc6aad8306728b782531cd5ead43379
font_01_sfnt_off00006323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6323 19028 bytes
SHA-256: 2515aa02e3d889b13f76009d9c677d74fa4d81545c664432e4827caf39d3f76f

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