Malicious PDF — malware analysis report

Static analysis result for SHA-256 53dd4d635a3a65e7…

MALICIOUS

PDF

45.3 KB Created: 2021-05-15 01:16:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c5c705a388e3227eb10bbadded039055 SHA-1: 0739b96ed2546c1362cf6838c81515144bc7a448 SHA-256: 53dd4d635a3a65e7bd81b3362aed9bd155531e3d1fee7ca9efff243a68ced62f
142 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/479516143/minecraft-windows-10-free-code-game-hack PDF link annotation
    • http://jdlwealth.com/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://jdlwealth.com/images/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-spin_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/best-hack-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://jdlwealth.com/images/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a8e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8E 25236 bytes
SHA-256: 7dfc3f8f8fe904d506ad19d83919fda07292ff4018101be26b2d99211ff64915
font_01_sfnt_off00008405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8405 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off00008dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAC 18524 bytes
SHA-256: 61f4e129dbb086a6f9797ef369c55cdd3b58d633037fca8f4f59eaf5785788a4

Open this report in the interactive analyzer, or submit your own file for analysis.