Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab254bef254ea8b…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 21:39:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4ac2409d097dafd41203aebcaaf34531 SHA-1: 095e401f16e2b7bfdaddb9ebac8fc63dce1a8d2b SHA-256: 7ab254bef254ea8bc3a0abf7f18d488013dec9506bd17f02068f964b71e72245
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which are SEO-optimized and point to sites offering game cheats and hacks for popular games like Coin Master and Roblox. The ML classifier strongly indicated maliciousness, and the presence of a 'download button' lure further supports a malicious intent. The primary goal appears to be directing users to potentially malicious external sites.

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.tw/app/406889139/coin-master-links-that-don-t-expire-game-hack
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins-link_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/free-robux-hack-no-verification_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/earn-free-spins-in-coin-master_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux-2021_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/coin-master-invite-friends-hack_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/hack-roblox-knife-simulator_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-2021_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/coin-master-rewards_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/free-robux-redeem-card-codes-2021_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/roblox-games-that-get-you-free-robux_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-pc-free_GM479516143.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/free-roblox-svg_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/roblox-free-robux-player_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/master-coin-free-spin_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/how-to-hack-denis-daily-on-roblox_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f7c.bin
5e76ee220869fb9dd3951c559a85cbbda52134f7e1abfa31f7002c1de5700b9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7C 22280 bytes
font_01_sfnt_off000060ce.bin
0bc74d52f75a1104db5e4695d05e5addd24de774456fb5db8c3829ae8d2508b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CE 18724 bytes

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