Malicious PDF — malware analysis report

Static analysis result for SHA-256 2694583a1303aab3…

MALICIOUS

PDF

35.5 KB Created: 2021-07-06 00:11:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7f5ab91cc24840ee9dba0286039c1e6f SHA-1: 9608cb264590ad1a1f582da0efd948c91ed4012b SHA-256: 2694583a1303aab3e027f43a811b50d376c3907d8395e238b69c95c22eca9010
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 0.9980

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.
  • 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 http://netcdn.tw/app/431946152/easy-robux-today-game-hack PDF link annotation
    • https://vieclamjapan.com/upload/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-get-free-pant-and-free-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-get-free-robux-no-human-verification-or-offers_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/marshmello-roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/features-roblox-robux-hack-apk_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-hack-roblox-on-macbook-pro_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-use-cheat-engine-64-on-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-dying-sound-free_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/can-you-cheat-to-get-money-on-bloxburg-roblox_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-get-free-robuxs-the-add_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-hack-menu-jailbreak-2021_GM431946152.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_off0000342b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x342B 22484 bytes
SHA-256: 4008134cc312fb37acc6b7a0b78c7d87df3d0aa635435feedd43e6ecaf5e76b2
font_01_sfnt_off0000660c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x660C 18904 bytes
SHA-256: e8b58a39461b0f877a4918c9ff7187193568740aa878691311f4b88fe2d0f745

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