Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc933502945e2593…

MALICIOUS

PDF

44.8 KB Created: 2021-05-12 16:32:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 54ee8c99871efc782893657591f9bd58 SHA-1: 96c31709587cbc1b1bc450e3c2c3445837dff72e SHA-256: cc933502945e2593e456519b71dd54bcc3dad7a21409ca51faa3d1d97bce84c3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that form a link farm, likely for SEO manipulation or to direct users to potentially malicious content. The document body text and extracted URLs suggest a lure related to free game currency or hacks, a common phishing tactic. While no scripts were explicitly extracted, the PDF structure and the presence of external links indicate an attempt to redirect the user, potentially leading to further exploitation or malware download.

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/how-to-get-free-robux-without-download-apps-or-survey-game-hack
    • http://selectionspdf.fr/images/coin-master-free-spins-5-10-2021_GM406889139.pdf
    • http://selectionspdf.fr/images/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • http://selectionspdf.fr/images/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • http://selectionspdf.fr/images/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdf
    • http://selectionspdf.fr/images/free-coins--spins-coin-master_GM406889139.pdf
    • http://selectionspdf.fr/images/how-to-hack-any-roblox-account_GM431946152.pdf
    • http://selectionspdf.fr/images/free-minecraft-maps-pe_GM479516143.pdf
    • http://selectionspdf.fr/images/easy-ways-to-get-free-robux_GM431946152.pdf
    • http://selectionspdf.fr/images/coin-master-apk_GM406889139.pdf
    • http://selectionspdf.fr/images/how-to-get-free-robux-codes_GM431946152.pdf
    • http://selectionspdf.fr/images/roblox-robux-generator-tool_GM431946152.pdf
    • http://selectionspdf.fr/images/how-to-get-free-outfits-on-roblox_GM431946152.pdf
    • http://selectionspdf.fr/images/google-how-do-you-get-free-robux_GM431946152.pdf
    • http://selectionspdf.fr/images/free-spins-on-coin-masters_GM406889139.pdf
    • http://selectionspdf.fr/images/free-money-links-coin-master_GM406889139.pdf
    • http://selectionspdf.fr/images/free-robux-no-anti-bot-verification_GM431946152.pdf
    • http://selectionspdf.fr/images/best-minecraft-hacked-client_GM479516143.pdf
    • http://selectionspdf.fr/images/rbx-free_GM431946152.pdf
    • http://selectionspdf.fr/images/coin-master-claim-spins_GM406889139.pdf
    • http://selectionspdf.fr/images/roblox-script-hacks_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a8c.bin
e27375429960cd3378d894d1950e437ccb564885c2662ede31d046a695b6d6f3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8C 26952 bytes
font_01_sfnt_off00008845.bin
a2325719e7076f7032f87f435cdda87ec67b0b67db20430c9492992df634e2b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8845 19880 bytes

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