Malicious PDF — malware analysis report

Static analysis result for SHA-256 80232f042835ed33…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 12:29:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e29119aee4fd9aed906ccc8f5e454484 SHA-1: 7df96a0ec51810f66a778ccdecd9ecc3148ac1df SHA-256: 80232f042835ed330b0a22f6c62829860ebdc5bec173c48504ace2ebab09cad3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs, many of which are structured as SEO link farms, pointing to sites offering 'free Robux' or 'free spins'. The primary URL, http://netcdn.tw/app/431946152/get-free-robux-no-human-verification-game-hack, suggests a lure for game-related cheats or currency. The presence of a PDF_SEO_LINK_FARM heuristic indicates a large number of external links designed to manipulate search engine results, a common tactic for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to potentially harmful websites.

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.tw/app/431946152/get-free-robux-no-human-verification-game-hack PDF link annotation
    • http://library.asih-husada.ac.id/repository/http-proxy-site-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-free-robux-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/sites-for-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-online-free-sign-up_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/city-17-roblox-token-hack-dll_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/adidas-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/cheats-for-money-on-roblox-for-bloxburg_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-pokemon-go-accounts-level-30-2021_GM1094591345.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-hack-ninja-simulator-download_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.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_off00002de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE1 22144 bytes
SHA-256: 3ef4da7160a0856d902a84fa338aa1fce9e6929aae9fcfc68c911e402a4af1f4
font_01_sfnt_off00005f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F00 19336 bytes
SHA-256: a90fe5938b7c8c7d620c675c61825ef91391e60c8f891a39cc2f187e1f68d0cb

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