Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f476236edcdec61…

MALICIOUS

PDF

45.7 KB Created: 2021-05-12 19:35:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1f296932e22f7dc13eb9fef7d8bf12fb SHA-1: 3d59400b11d79997d6f92e3fa1c68e3a91fb6f8e SHA-256: 0f476236edcdec61694cdd7d3344aa8893fdf63a6b12797704c686d9f0f751b2
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 0.9432

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.xyz/app/406889139/coin-master-cards-for-free-game-hack PDF link annotation
    • https://www.impactfoods.co.uk/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/roblox-army-robux_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-robux-android_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/picture-roblox_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-robux-live_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/how-to-get-minecraft-pe-for-free-ios_GM479516143.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_off000049ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49ED 25856 bytes
SHA-256: 01c3d1014e9deb964bb1d11fcffbf2af18e3b37565cbec25bfe8dd1f6cad2f74
font_01_sfnt_off0000844e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844E 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E00 19040 bytes
SHA-256: b381fcb782036682e0e3f8d3197d7406d81bb7e1f8a806ce8874b3c33e9d6958

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