Malicious PDF — malware analysis report

Static analysis result for SHA-256 e08fc1e66f0638cd…

MALICIOUS

PDF

47.0 KB Created: 2021-06-09 13:01:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1a91d352d2aa31864fe92aa0c0242ae3 SHA-1: 520fe7f0fb42bb593735994ac0c9dcaafa6585a2 SHA-256: e08fc1e66f0638cd668a296c2eba78a132998f5a849f899069bf9924e5e8a405
102 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-optimized links for game hacks and free items, indicating a link farm or phishing attempt. The presence of a 'download button' heuristic further supports the lure of downloading content. While no scripts were explicitly extracted, the PDF structure and extensive external linking suggest an attempt to redirect users to malicious or unwanted content, likely related to game exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/roblox-free-stuff-hack-game-hack PDF link annotation
    • http://brokermortgages.com/images/roblox-pokeblox-hack_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://brokermortgages.com/images/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-followers-on-tiktok-no-human-verification_GM835599320.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spins-coin-master-2021_GM406889139.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
stream_004_off00004faf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FAF 30916 bytes
SHA-256: 02ad3f887c678dce25e69951971525bb2d107319334ce9c3918bd9086bb173de
font_01_sfnt_off00009470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9470 18588 bytes
SHA-256: 312473cc810b45b604111b6daeb550de73724b68f9e45083e8f37868efd2f9c4

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