Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a7fb576e4a1e675…

MALICIOUS

PDF

43.4 KB Created: 2021-05-17 22:39:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 30e89cde1b1be9c46807c83627536677 SHA-1: 6a2e810bc9144992635f711d5e3a4a70ad1cf7f9 SHA-256: 0a7fb576e4a1e675bbe197950aa1303ae5f9a45ffa9a13ac18ece0d3881c3ff8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a document body that promotes game hacking and free in-game currency, strongly suggesting a phishing or malware distribution lure. The presence of a large number of external links, many with SEO-like slugs, indicates a link farm designed to direct users to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/how-to-hack-roblox-on-mobile-game-hack
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-october-2021_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-gift-cards_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/best-minecraft-hacked-client-2021_GM479516143.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/master-coin-hack-apk_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-spins-october-28-2021-coin-master_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-connection-lost-hack_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-download-2021_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021-today_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/roblox-money-hack_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-robux-no-offers_GM431946152.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-fan_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/minecraft-diamond-finder-hack_GM479516143.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-hack-version-33-2_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-mod-version-free-download-v344_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/blogspot-free-spins-coin-master_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-links-free-spins_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-iphone_GM406889139.pdf
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-hack-no-survey_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bb4.bin
c06da13543751bc47f50d1e853248e179535d97e22b320694b3a7bac7b3a6ecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB4 25280 bytes
font_01_sfnt_off0000865e.bin
cfa1ee913d083643ff52c211c3740090c9e62a3c87f75aa46b5fb7e4e02a93ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x865E 18660 bytes

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