Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aab13f0ede6ce84…

MALICIOUS

PDF

46.8 KB Created: 2021-05-12 12:04:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a244b7a4ce8d21155cc2531a07889d4b SHA-1: 3b865464da489d63613b9059d3f6ff31511b5223 SHA-256: 5aab13f0ede6ce84e40748d6468775b981dec44f66f167c789f32bf5fac695b3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized to appear as legitimate sources for game-related cheats or freebies. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate malicious intent. The primary URL, https://netcdn.xyz/app/431946152/actual-free-robux-game-hack, suggests a lure for users seeking in-game currency, likely leading to a scam or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/actual-free-robux-game-hack
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-link-blogspot_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-claim-free-spins_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-spin-redeem-code_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/best-free-minecraft-hacked-client_GM479516143.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-coins-coin-master-link_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-coins_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-spins-link-facebook_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-hack-tool-exe_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/roblox-free-exploits_GM431946152.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-daily_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-hack-mobile_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-spin-coin-master-2021_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-100-free-spins-link_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-robux-gift-card_GM431946152.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-gold-cards-hack_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-spin-hack-link_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-minecraft-website_GM479516143.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdf
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/100-hack-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e81.bin
869f16a24cbbfb7ef0eb44c562476c53da0ddf88dc3cdd7ca60836efba014b05		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E81 26208 bytes
font_01_sfnt_off00008a4c.bin
94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4C 2824 bytes
font_02_sfnt_off000093fb.bin
37b67a04c59087902b42b65f26bec20808041b5185ddbc4d4c9e15973e68d0ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93FB 18420 bytes

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