Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f166cffbf041dc…

MALICIOUS

PDF

50.9 KB Created: 2021-06-08 03:13:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bfa36b3aa46180a7a7fcb4d158e9f6af SHA-1: dd4b7700027fb569408723605106d6158c54ad61 SHA-256: 32f166cffbf041dc6f41454e7ac82896f432054ad4508fb6004e38c70de27fff
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9713

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-games-free-robux-bye-roblox-game-hack PDF link annotation
    • http://aviaprofsoyuz.info/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/grab-points-login_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/roblox-201-exploit-free-lvl7_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005090.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5090 25388 bytes
SHA-256: 6bbccd854af41ced022d9fb48b3e9d5dd0de84dc74eb71865a21d94fb7d4950d
font_01_sfnt_off00008bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC3 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000095a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95A8 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000a2ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2BA 18756 bytes
SHA-256: 656132d75a4986086980da31ded07938be1fa9ff16f1cb54945b00f93eee11bb

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