Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd8441da1c74843c…

MALICIOUS

PDF

35.5 KB Created: 2021-07-06 12:39:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8169647e05fcaade6b6babd173fc9eaa SHA-1: 3e269504250fd68cf2fab8c91550d6bef119b515 SHA-256: dd8441da1c74843cc288f59cbaad822c4524eb47b28c61b252d69ef693f12df7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file 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 4

  • 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/how-to-get-free-premium-roblox-game-hack PDF link annotation
    • http://library.persadabunda.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-use-inspect-element-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-roblox-bots_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-app-ios_GM406889139.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_off000031ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31AB 22584 bytes
SHA-256: 164e1e115a48554888774a62935b7c49fd8ef1b727983a7ce739482e72d8cc96
font_01_sfnt_off00006431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6431 19592 bytes
SHA-256: 8d0174b0934bd13f73c8324677ef321856a80226dce412d68411a4eff9948ea0

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