Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02e05e0aa138092…

MALICIOUS

PDF

35.0 KB Created: 2021-06-25 19:39:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 25f00d1fc69ff4cce9ed7a8ec209bb89 SHA-1: c95e1a91f58d7f9efaa58af081ff6668500a5fa9 SHA-256: d02e05e0aa138092c56087586796998387c8ba7264e492e7d48beca8d74a968e
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to trick users into clicking malicious links. The document contains numerous links to redirectors and SEO link farms, including the primary malicious URL http://netcdn.co/app/431946152/robux-free-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering attack aimed at driving traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robux-free-2021-game-hack In PDF document text
    • http://pustaka.fk.unand.ac.id/repository/game-dev-life-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-cs-go-hack-nasl-yaplr_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/hack-para-hackear-cuentas-de-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/muscles-legends-roblox-script-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-how-to-get-unlimited-free-robux-and-obc_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-download-robloxcom_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/como-descargar-hacks-para-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-hack-god-mode-jailbreak-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/the-labyrinth-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-roblox-clothes-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-generator-without-download-and-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/black-jeans-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/nopde-engine-64-roblox-hacks-download_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/hack-robux-ios-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000314b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314B 22556 bytes
SHA-256: a51a811ae539b30d4e98f00d004cf498b513f99de224b734fe7c1d89969d9eed
font_01_sfnt_off00006394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6394 19116 bytes
SHA-256: 4c1a9a86b4b6699ac70fc87850995a4a744955ac9e840568fd45137616a01a77

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