Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5da30a313e21b80…

MALICIOUS

PDF

34.6 KB Created: 2021-06-20 07:02:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f31bcc667fa75e04c94e4834ed0f1055 SHA-1: 68d67630b88b767ea327b859a2bd95c58b9e1fc9 SHA-256: f5da30a313e21b809ae806e8a49d4c887877771937730363833867c1fc996fff
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.co/app/431946152/click-this-button-for-free-robux-game-hack PDF link annotation
    • https://repository.stikesindramayu.ac.id/repository/oprewards-robux-free_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/btools-roblox-hack-2021-working_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-strucid-battle-royale-aimbot-hack-full-lua_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/robux-earning-websites_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/robloxs-codes-free-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-with-download_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/realhack-for-roblox-real-coding-hack-for-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-cheat-codes-rocitizensnovember-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-rewards_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_off00003222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3222 21648 bytes
SHA-256: 0b94a4b86330da567973904798a3d6ee5b7df3f5fc08c51ecfb45135d24493c7
font_01_sfnt_off000061a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A1 19348 bytes
SHA-256: da611945d4b6ce19b7f0e0cf0d42832441d7097c8a134a87452424979c6557e1

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