Malicious PDF — malware analysis report

Static analysis result for SHA-256 7622f87951a24fe7…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 05:11:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 037655fceacc5641076477ef29596ed0 SHA-1: ba0cb28cfbe152521780ad6eb011773c32eadec4 SHA-256: 7622f87951a24fe7cc125b906013f76f2a1c439ea7c47afe73d79e33fd7f880d
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are related to game hacks and free in-game currency, suggesting a link farm or phishing attempt. The presence of a 'download' call-to-action further supports this, indicating the document's purpose is to redirect users to potentially malicious sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/robux-websites-that-work-game-hack
    • http://katalog.ireyogya.org/repository/coin-master-332-apk-free-download_GM406889139.pdf
    • http://katalog.ireyogya.org/repository/roblox-generator_GM431946152.pdf
    • http://katalog.ireyogya.org/repository/free-spins-coin-master-app_GM406889139.pdf
    • http://katalog.ireyogya.org/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdf
    • http://katalog.ireyogya.org/repository/free-robux-no-verification-2021-android_GM431946152.pdf
    • http://katalog.ireyogya.org/repository/master-coin-free-spin-daily_GM406889139.pdf
    • http://katalog.ireyogya.org/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdf
    • http://katalog.ireyogya.org/repository/games-to-get-free-robux_GM431946152.pdf
    • http://katalog.ireyogya.org/repository/hack-coin-master-net_GM406889139.pdf
    • http://katalog.ireyogya.org/repository/fb-coin-master_GM406889139.pdf
    • http://katalog.ireyogya.org/repository/robloxheroxyz-free-robux_GM431946152.pdf
    • http://katalog.ireyogya.org/repository/how-to-get-more-spins-on-coin-master_GM406889139.pdf
    • http://katalog.ireyogya.org/repository/get-free-spins-coin-master-october-2021_GM406889139.pdf
    • http://katalog.ireyogya.org/repository/no-scam-free-robux_GM431946152.pdf
    • http://katalog.ireyogya.org/repository/best-way-to-get-free-robux_GM431946152.pdf
    • http://katalog.ireyogya.org/repository/robux-generator-no-human-verification_GM431946152.pdf
    • http://katalog.ireyogya.org/repository/free-clothing-on-roblox_GM431946152.pdf
    • http://katalog.ireyogya.org/repository/free-spins-coin-master-ios-links_GM406889139.pdf
    • http://katalog.ireyogya.org/repository/pokemon-go-free-spoofing_GM1094591345.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050ee.bin
ed75093cb549ff7393d250b3c7439d80e53b2671806f96f21fc9d9c6e8c81c46		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50EE 25220 bytes
font_01_sfnt_off00008b0b.bin
f41676629f29ed6a42ccacba259d9acdb79474bce0625b7b45fdd4d276e33c05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0B 18836 bytes

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