Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b5142f72ab018c…

MALICIOUS

PDF

47.7 KB Created: 2021-06-09 03:33:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5abffbe419eb47162b7505dbe30a7aba SHA-1: c6a21313d21eb4caeba0fb786af182233822cb3c SHA-256: 03b5142f72ab018c6466f8df2108ee463b603a253cf21b6391ec3eb3eb4f8cf3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which are SEO-optimized and point to sites offering free in-game currency or items for popular games like Roblox and Coin Master. The document's content and the numerous external links suggest a phishing or malware distribution scheme, likely using a link farm to obscure the ultimate malicious destination. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/sandra-how-to-get-free-items-roblox-game-hack PDF link annotation
    • http://santeh-40.ru/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/roblox-download-free-microsoft_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/all-vip-admin-commands-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-coin-master-spins_GM406889139.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
stream_004_off00005358.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5358 30012 bytes
SHA-256: 60dd0c3eaeb122ae5b145dc40db121d8acb103a82ec01e828151484b32dc45ba
font_01_sfnt_off00009655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9655 18880 bytes
SHA-256: c27700240020bab775bc28c39d0123fcaf4426bb69ba96ca0ee8b094a34d0f05

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