Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ee55893c41abf5…

MALICIOUS

PDF

48.4 KB Created: 2021-06-11 02:21:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 320a047f9820335d18defecd1f07c279 SHA-1: 098f1dd24e01f09112b7a72b0557be5125f63241 SHA-256: 96ee55893c41abf597b965b07430c96770eb6de420c9d92794579cdede874778
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed to lure users into clicking links by promising free game hacks or currency. It contains multiple links to a malicious redirector and a large number of links to other PDFs hosted on a compromised website, forming a link farm. The primary malicious URL identified is https://netcdn.tw/app/431946152/free-robux-codes-pc-game-hack, which likely serves as the initial entry point to a phishing or malware distribution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/free-robux-codes-pc-game-hack In PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-roblox-accounts-with-console_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/fast-run-hack-roblox_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-4-all-roblox_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-using-gamepasses_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/como-hackear-ordenador-en-roblox-cuentas_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://wolfzscriptsIn 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
stream_004_off00004eda.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EDA 28892 bytes
SHA-256: 7751418c7683e69e716e1e9dba5e6c2cbbcade4f22278232d5360946a289781b
font_01_sfnt_off00009083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9083 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00009a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A34 18340 bytes
SHA-256: eb3c5d49860ba0b997d73b7bf4c342906ec7b1a0e94ab1cff28a4b3b47671ad6

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