Malicious PDF — malware analysis report

Static analysis result for SHA-256 03636a9ea3a8c30b…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 22:54:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a35b0805d3d0517e3b97793e29b0e742 SHA-1: da7c424b49b27ab152e2f864b7eda75f220b8077 SHA-256: 03636a9ea3a8c30b1c3e8ba5d60700a8f2a45527321db3d47c1655024e39e19a
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a call-to-action phrase, strongly suggesting a phishing or scam attempt. The primary lure appears to be 'free Robux' and game hacks, directing users to download files from external sites. The ML classifier also flagged this PDF as malicious with high confidence.

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/431946152/robux-free-2021-game-hack PDF link annotation
    • http://library.feb.unila.ac.id/rfeb/repository/mega-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-billionaire-simulator-hack_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-got-talent-hack-piano_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/apocalypse-rising-roblox-map-free-download_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-coins-generator-roblox-high-school-2_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-get-hat-paclage-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/linoria-hub-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/blakberry-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/roblox-ban_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/buy-my-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/speck-elements-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-cheat-in-weight-lifting-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F72 21364 bytes
SHA-256: ed8e91d03176c188d732e8073a7168b2d4f88f6a750af2c756cf96f97f0ac921
font_01_sfnt_off00005e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6B 19116 bytes
SHA-256: 4c1a9a86b4b6699ac70fc87850995a4a744955ac9e840568fd45137616a01a77

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