Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6a222bff7b2c2b…

MALICIOUS

PDF

44.4 KB Created: 2021-05-11 05:01:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: df7777f187cb0fd660865014cd28d0cf SHA-1: ab6112a6db4152b2641bef5bbee3c150610e4089 SHA-256: ce6a222bff7b2c2bbba6cdede49f5bedf5011d655cdd0475a2d325a6d6bbf2e8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, forming a link farm, and a primary URL associated with 'free Robux codes'. The ML classifier strongly indicates maliciousness. The document's content and structure suggest it's designed to drive traffic to potentially malicious sites, likely as part of a phishing or scam campaign.

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 https://netcdn.xyz/app/431946152/free-robux-codes-2021-not-used-game-hack
    • https://www.talakeel.com/uploaded_files/userfiles/files/how-to-hack-coin-master-ios_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/coin-master-hack-pro-gamers-com_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/robux-generators-that-actually-work_GM431946152.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/coin-master-free-spins-daily_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/roblox-gift-card-online-free_GM431946152.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-spins-on-coin-master-hack_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/coin-master-free-spin-game_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/coin-master-free-cards-link_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/unlimited-spin-coin-master-hack_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-spins-coin-master_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-group-roblox_GM431946152.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-spin-and-daily-news-coin-master_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/coin-master-spins-gratis_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/daily-free-spin-and-coin_GM406889139.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-robux-hack_GM431946152.pdf
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-coin-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d2e.bin
208dd29de5e191574788380b8632b2c3632a147c81b6c9fd4a0cd027354a294b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D2E 26588 bytes
font_01_sfnt_off0000897e.bin
342a41804753b243bf13fa7c19db71c7debbb8fa80f4750c82899b0ccf7aa343
pdf-font-stream PDF embedded font (sfnt) at offset 0x897E 18880 bytes