Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d9a6ee851feb4fc…

MALICIOUS

PDF

32.5 KB Created: 2021-06-19 01:46:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8874dc54ee81d7ec45dc2b0871fd61ea SHA-1: fa518062a4fe852572f07aed668b317ae53d0d88 SHA-256: 2d9a6ee851feb4fcc34f638a4def540f05910256d9d53303395a370aa6bb8445
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which are SEO-optimized and point to resources related to game hacks and in-game currency. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous links suggests an attempt to direct users to potentially harmful content or phishing sites. The document body, though truncated, also contains URLs consistent with this lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.co/app/431946152/roblox-cuffs-free-game-hack PDF link annotation
    • http://reggieslockandkey.com/images/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-robux-easy-pastebin-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/where-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-card-generator-hack_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-more-followers-on-tiktok-free_GM835599320.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-saiyan-simulator-hack_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-cheat-mods_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-gtte-free-robux-2021-may-12_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-robux-key_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_off00002c9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9E 21396 bytes
SHA-256: 0c881fe7d391f5f116039acc03f4047dc7a3ad78ef2601ebb5e122ac45535787
font_01_sfnt_off00005b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4D 18604 bytes
SHA-256: 26f4712f7b85d8f6fa12047ab6eb89a22fb158d2b8b0faa14f7e3add62677974

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