Malicious PDF — malware analysis report

Static analysis result for SHA-256 a13678856cf88976…

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 09:23:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fe3211f2ecbb04dcb0b364449b29f256 SHA-1: 18d0c9dc175422001324bf14e929da6214eb0a1d SHA-256: a13678856cf88976643ef1a08e572e6c7d0537cbad1eaf34d96008879be6b9c4
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-robux-com-game-hack PDF link annotation
    • https://perpustakaan.stieppi.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/robux-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-blogspot_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/roblox-final-stand-2-cheats_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-to-2021-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-free-spins-link-2021-today_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_off00002eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAA 21800 bytes
SHA-256: 5c17684172b3cd6d9e2bfe339117784b198fe76d7bb63b25ed8e309779062ff2
font_01_sfnt_off00005e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E71 19244 bytes
SHA-256: 2a82a6b4e88d45175d2fe2eaf287537d274cffbbed35dd56f8b6e767c09dfc54

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