Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5f901f2de84a24b…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 07:44:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a85d8a63237aad6d7012680415fd84bc SHA-1: 30eaab3151d800bca39b74ffbd163688366d367c SHA-256: c5f901f2de84a24b3c330cdd2f6688d6a8f756b44d68ffd4b5af30d570844479
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that attempts to lure the user with promises of free in-game currency and items. The heuristic firings indicate a large number of external links, suggesting a link farm or redirection scheme. The primary URL http://netcdn.tw/app/431946152/microsoft-free-robux-game-hack is likely a landing page for a malicious download or exploit.

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/microsoft-free-robux-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/beyond-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-super-easy-and-very-quick-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F89 22392 bytes
SHA-256: e58c227dd4fefeb0eb56d40aa632926b6d69e75362c771c02ac94d7df07e5e5f
font_01_sfnt_off0000615d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615D 19136 bytes
SHA-256: eceba35cd6627b8fd8c95b6fc578f752ad37bdbc88f79a1a211c8d87d48b0e2f

Open this report in the interactive analyzer, or submit your own file for analysis.