Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2a4f844130f8eb3…

MALICIOUS

PDF

48.1 KB Created: 2021-06-10 20:32:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bb1b20ba4dab084d3438f7df6dd330cc SHA-1: 7620ef90ea16186175ad6eeadeaa55f60d8da721 SHA-256: b2a4f844130f8eb3c38526e35371c5309d088e0951ece15ba700f1bb639c69f6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, identified as a link farm, that point to websites offering game-related cheats and giveaways. The ML classifier strongly indicated maliciousness, and the presence of a call-to-action button further supports a phishing or malware distribution attempt. The document likely serves as a lure to direct users to malicious sites or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/roblox-free-robux-giveaway-live-game-hack
    • http://behsanroshd.com/images/tiktok-likes-free_GM835599320.pdf
    • http://behsanroshd.com/images/hacks-to-get-free-robux_GM431946152.pdf
    • http://behsanroshd.com/images/roblox-catalog-free_GM431946152.pdf
    • http://behsanroshd.com/images/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdf
    • http://behsanroshd.com/images/good-free-minecraft-server-hosting_GM479516143.pdf
    • http://behsanroshd.com/images/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • http://behsanroshd.com/images/free-tiktok-hearts_GM835599320.pdf
    • http://behsanroshd.com/images/coin-master-latest-version-hack_GM406889139.pdf
    • http://behsanroshd.com/images/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdf
    • http://behsanroshd.com/images/free-coin-master-hacks-no-verification_GM406889139.pdf
    • http://behsanroshd.com/images/best-free-minecraft-server-hosting_GM479516143.pdf
    • http://behsanroshd.com/images/how-to-get-free-robux-on-phone_GM431946152.pdf
    • http://behsanroshd.com/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • http://behsanroshd.com/images/do-you-get-minecraft-windows-10-for-free_GM479516143.pdf
    • http://behsanroshd.com/images/2021-no-human-verification-hack-for-coin-master_GM406889139.pdf
    • http://behsanroshd.com/images/all-free-items-in-roblox_GM431946152.pdf
    • http://behsanroshd.com/images/robux-hack-no-verification_GM431946152.pdf
    • http://behsanroshd.com/images/hack-para-poder-hackear-en-roblox-2021_GM431946152.pdf
    • http://behsanroshd.com/images/hack-minecraft_GM479516143.pdf
    • http://behsanroshd.com/images/how-can-you-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000536c.bin
29b55073890e0ccb6a257195c6b085209ef297c6ac4e2fa6ae3da6ab1fdffb7c
pdf-font-stream PDF embedded font (sfnt) at offset 0x536C 25616 bytes
font_01_sfnt_off00008d90.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D90 2880 bytes
font_02_sfnt_off0000977b.bin
ec4540a5b924d28c2b2dd51586b89cb7c1abe73d4d5e0f23dc0996ac6353a840
pdf-font-stream PDF embedded font (sfnt) at offset 0x977B 18892 bytes