Malicious PDF — malware analysis report

Static analysis result for SHA-256 561d79588b7456ad…

MALICIOUS

PDF

44.8 KB Created: 2021-05-20 05:14:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9ef2b1fe7244986b72959c164e659e55 SHA-1: c8e9a01e929480e00a705e6d10c370cdba291b7f SHA-256: 561d79588b7456ade5432573c576b9de73d85f9f4bf50a6c4ef683c832a7f913
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links disguised as helpful content related to game hacks and currency. The ML classifier and the PDF_SEO_LINK_FARM heuristic strongly indicate malicious intent, likely to redirect users to phishing or malware distribution sites. The document body and extracted URLs suggest a lure for obtaining in-game currency or hacks, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-hack-roblox-to-get-robux-game-hack PDF link annotation
    • http://inextpresident.com/images/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/link-coin-master_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://www.roblox.coIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45CF 25760 bytes
SHA-256: 9efe1ce757ae0cdea5d9de56d017e444e34a7c8dd1a8a8e16a054b57ac706e6e
font_01_sfnt_off0000813c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x813C 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B26 18588 bytes
SHA-256: 6723e17a0e3ea7e17da9fa5ee91cb22fe0fa4706a6f3d09ae44dda015c08872b

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