Malicious PDF — malware analysis report

Static analysis result for SHA-256 4047b640c218ab91…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 16:53:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f83cfc201ef38bd26bbdb7c5e63b010b SHA-1: a1c4a292d7fc7d99360063d890541d8380660980 SHA-256: 4047b640c218ab915c0eeee7880544dcce16505fc2d04c576ba72066fc173044
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-hack-someones-account-on-roblox-game-hack PDF link annotation
    • http://digilib.stimlog.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hacking-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hack-robux-cheat-engine-61_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-my-account-password-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/god-mode-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-for-rpg-world-on-roblox-to-get-money_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-do-i-get-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hack-week-custom-materials_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-on-computer-inspect_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-mac-cheat-engine_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-gameplay_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_off00002f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F92 22064 bytes
SHA-256: 5041bb67f96e621287d487b50a539921ade18a4843a201920afd0d85f0f55610
font_01_sfnt_off00006069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6069 19324 bytes
SHA-256: 28ba82939c936f9b01a7caeed75c50b5986faeea817d1276e3bf1f7a5f42653e

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