Malicious PDF — malware analysis report

Static analysis result for SHA-256 77a032eae7f1c6d6…

MALICIOUS

PDF

44.3 KB Created: 2021-06-07 13:00:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 26bb9f5e956981b22e653596cf47b10c SHA-1: 6b272173a36b58c59da2115eb753193e49ec1d43 SHA-256: 77a032eae7f1c6d6d1cc398041a726569386122def3b30d0999640a9a2f0a03d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded links, forming a link farm, that direct users to pages offering game cheats and downloads. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or content-luring scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/ben-10-roblox-cheats-game-hack
    • http://bagliomangiapane.com/images/minecraft-free-download-mac_GM479516143.pdf
    • http://bagliomangiapane.com/images/free-robux-no-human-verify_GM431946152.pdf
    • http://bagliomangiapane.com/images/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdf
    • http://bagliomangiapane.com/images/howto-get-free-robux-hack-javascript-2021-not-patched_GM431946152.pdf
    • http://bagliomangiapane.com/images/free-magical-chest-coin-master_GM406889139.pdf
    • http://bagliomangiapane.com/images/how-to-download-minecraft-for-free_GM479516143.pdf
    • http://bagliomangiapane.com/images/coin-master-free-gifts_GM406889139.pdf
    • http://bagliomangiapane.com/images/uprobuxcom-free-robux_GM431946152.pdf
    • http://bagliomangiapane.com/images/instante-break-block-roblox-script-hack_GM431946152.pdf
    • http://bagliomangiapane.com/images/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • http://bagliomangiapane.com/images/free-spins-for-coin-master-game_GM406889139.pdf
    • http://bagliomangiapane.com/images/avatar-the-last-airbender-roblox_GM431946152.pdf
    • http://bagliomangiapane.com/images/coin-master-hack-tool-without-human-verification_GM406889139.pdf
    • http://bagliomangiapane.com/images/roblox-escape-games-free_GM431946152.pdf
    • http://bagliomangiapane.com/images/easy-how-to-get-free-robux_GM431946152.pdf
    • http://bagliomangiapane.com/images/free-roblox-clothes-and-hair_GM431946152.pdf
    • http://bagliomangiapane.com/images/what-do-roblox-points-do_GM431946152.pdf
    • http://bagliomangiapane.com/images/2021-coin-master-hack_GM406889139.pdf
    • http://bagliomangiapane.com/images/free-minecraft-survival-server_GM479516143.pdf
    • http://bagliomangiapane.com/images/free-spins-coin-master-generator_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005057.bin
d4d5899ede3e2377bcb18e1e2823aac11af360687363cf1838e5e984e1a5fa0b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5057 24912 bytes
font_01_sfnt_off000089b4.bin
b0cacb98b4351a8699599ea7614190d835dbd5b616a77d80896c62be8c5aec05
pdf-font-stream PDF embedded font (sfnt) at offset 0x89B4 18560 bytes