Malicious PDF — malware analysis report

Static analysis result for SHA-256 d47c3fd62562b40d…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 09:04:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d5d200e888d798ac611e49aa33aed5b7 SHA-1: 74520378f27bdc3d66bcc00679bc858a7672cafb SHA-256: d47c3fd62562b40d33432fe12ebd0722f6c7af5c79a76579fb6ef826b2f3f2b8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains numerous links to external resources, including a direct link to a potential executable download. The document body and extracted URLs suggest a lure for free in-game currency or items, which is a common tactic for distributing malware. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://netcdn.co/app/431946152/real-hack-for-robux-inspect-game-hack
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/how-to-get-verified-on-tiktok-for-free_GM835599320.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/promo-codes-to-get-free-robux_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-free-spin-realme-products_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-to-play-minecraft-servers_GM479516143.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-group_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/robloxmatchcom-free-robux_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-free-stuff_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/roblox-com-redeem_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/roblox-promo-codes-free-robux_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/roblox-phantom-forces-hack_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-2021_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/hackear-juego-coin-master-espaol_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/hack-coin-master-mod-apk_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/tower-of-hell-roblox-hack_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-for-iphone_GM406889139.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://elearning.mialmarufbeyan.sch.id/__statics/gudangsoal/files/get-free-robux-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003225.bin
17445fc1cba9d4af4f2d7bf261dde44dc2e276150e3c96dc19392cbfc19b844c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3225 22132 bytes
font_01_sfnt_off00006356.bin
d78ff13255b4a6813fd0cdf0323b72ec8cd33acfc1c778fd5556474df2fe93ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 19240 bytes

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