Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3dff753784ea19c…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 14:27:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 183b25ac81feeb255e3a6594935c2ead SHA-1: aab6121949c28ff4f8c8b498d62723e827908792 SHA-256: e3dff753784ea19c13f5c728d385720b8ceb68e48ecc4e679937cda922f8cd55
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external resources, many of which are presented as game hacks or generators for virtual currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a tactic to distribute malicious content or drive traffic to potentially compromised sites. The ML classifier also strongly flagged this PDF as malicious. The presence of embedded URLs and the document body content strongly suggest a lure for users seeking cheats or free in-game items, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/hack-coin-master-2021-game-hack PDF link annotation
    • https://www.alarqam.ae/userfiles/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/hack-script-for-one-piece-legendary-roblox-copy-and-paste_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-free-noob-outfits_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-giveaway-now_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-roblox-accounts-with-robux-2021-march_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-2021-not-fake_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/hacked-roblox-game_GM431946152.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
font_00_sfnt_off000031ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31AB 22792 bytes
SHA-256: beee8b5257d2498932e40a9499efca5dbe69f360a376af0e4a50f58cc6ec10bc
font_01_sfnt_off000064ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BA 18408 bytes
SHA-256: ac4021def2f54d21e7403250ed57b213ecf57135db0aff9a532298afe491631a

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