Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a90fa0764f8a50…

MALICIOUS

PDF

34.6 KB Created: 2021-06-18 06:11:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 18f2f7874f52b8660f1afe81e4430cda SHA-1: de5214aafcb95a13142b51369421611d9ddb9a48 SHA-256: d7a90fa0764f8a50bbf01604ef7b9605d211acdf71a5034a488a94d0936e0831
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are disguised as downloadable PDFs related to game hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a coordinated effort to direct users to potentially malicious content. The ML classifier also strongly flagged this PDF as malicious.

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.co/app/431946152/how-to-hack-roblox-catalog-game-hack PDF link annotation
    • http://reggieslockandkey.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-exploit-hack-one-piece_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/hack-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/hack-prison-life-roblox-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-jailbreak-hack-money-download_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • http://reggieslockandkey.com/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32DC 21772 bytes
SHA-256: 4f7196eea27e3c3b92ef3977fb99c03f1853bac07ca904cf384edfa35971d15a
font_01_sfnt_off000062b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B2 18736 bytes
SHA-256: c7b10090992896dc02f22dc6f27746a2fa371d7393e4c4c0ec0b069770b3ba0a

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