Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db63dfabfc06195…

MALICIOUS

PDF

43.2 KB Created: 2021-05-13 20:12:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fab124c87da24875d657d0db6eb09206 SHA-1: 6a0c8ed226fe3ee86f8869d974aad11d9e902d5b SHA-256: 8db63dfabfc061955df58509482465318b6643164942897c56567984eaf137ea
110 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO link farms for game-related cheats and freebies. The document body and extracted URLs suggest a lure for users seeking free in-game currency or game access, which is a common phishing and malware distribution tactic. The ML classifier strongly indicated maliciousness, supporting the interpretation of these links as part of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/479516143/windows-10-minecraft-free-with-java-game-hack
    • https://www.alarqam.ae/userfiles/files/free-promo-codes-for-robux_GM431946152.pdf
    • https://www.alarqam.ae/userfiles/files/free-coin-master-link-2021_GM406889139.pdf
    • https://www.alarqam.ae/userfiles/files/minecraft-realms-free-trial_GM479516143.pdf
    • https://www.alarqam.ae/userfiles/files/coin-master-support_GM406889139.pdf
    • https://www.alarqam.ae/userfiles/files/minecraft-that-you-can-play-for-free_GM479516143.pdf
    • https://www.alarqam.ae/userfiles/files/link-for-free-spins-on-coin-master_GM406889139.pdf
    • https://www.alarqam.ae/userfiles/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdf
    • https://www.alarqam.ae/userfiles/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdf
    • https://www.alarqam.ae/userfiles/files/roblox-hack-generator_GM431946152.pdf
    • https://www.alarqam.ae/userfiles/files/coin-master-mod-apk-hack_GM406889139.pdf
    • https://www.alarqam.ae/userfiles/files/coin-master-game-hacking_GM406889139.pdf
    • https://www.alarqam.ae/userfiles/files/robux-codes-generator-no-human-verification_GM431946152.pdf
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdf
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • https://www.alarqam.ae/userfiles/files/coin-master-hack-without-downloading-apps_GM406889139.pdf
    • https://www.alarqam.ae/userfiles/files/will-minecraft-dungeons-be-free_GM479516143.pdf
    • https://www.alarqam.ae/userfiles/files/best-free-minecraft-server-hosting_GM479516143.pdf
    • https://www.alarqam.ae/userfiles/files/facebook-coin-master-hack_GM406889139.pdf
    • https://www.alarqam.ae/userfiles/files/coin-master-apk-mod_GM406889139.pdf
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spins-hack-link_GM406889139.pdf
    • https://www.yout
    • https://sigmaclient.info#2
    • https://flux.today#3
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a57.bin
e424aa7e632fae203e6c6788079317c4f1e925dbf5103abba10991d887371604
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A57 25788 bytes
font_01_sfnt_off00008499.bin
9d6b9c54d2a131b4fb739230225618891bd38f691818b7a412f84340786b5520
pdf-font-stream PDF embedded font (sfnt) at offset 0x8499 18972 bytes