Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ef373b460acc56…

MALICIOUS

PDF

42.2 KB Created: 2021-05-19 22:11:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1dd6cf03a666cbc4fe3881495c1063dc SHA-1: c149dba4c56ba2e20c31921e0c716d008d4e3955 SHA-256: 07ef373b460acc56e6598807a681883b4d55d2cdeae261deaebcf7af8e9df51e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links to external websites, many of which are structured as SEO link farms. The document body and extracted URLs suggest a lure for free in-game currency or software, indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/835599320/tiktok-free-view-iphone-ios-13-game-hack
    • http://raqam.net/uploaded_files/userfiles/files/new-free-money-links-coin-master_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/free-minecraft-alt-generator_GM479516143.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-hack-with-facebook-login_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-cheats-2021_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/minecraft-free-download-mac_GM479516143.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-free-spins-android_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/haktuts-coin-master-free-spin-today_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-rewards-2021_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-15-free-spin-link-today_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/how-to-hack-coin-master-without-root_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coin-spin_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/free-roblox-accounts-2021_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/wurst-115_GM479516143.pdf
    • http://raqam.net/uploaded_files/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-free-spins-blogspot_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/hacks-to-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000479a.bin
e3b6f755da4e2dc29e7d7797ede47e40d007ac6babdab95090f271cd0b3f835e
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x479A 26328 bytes
font_01_sfnt_off0000826f.bin
cc09473334bff4f1bde2f90b19f809c85a03da8498171270f88d9223211a7046
pdf-font-stream PDF embedded font (sfnt) at offset 0x826F 18376 bytes