Malicious PDF — malware analysis report

Static analysis result for SHA-256 78acaf94cff7cece…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 17:08:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c7c48d0305de9079092a43b2c0019537 SHA-1: c0ec0c6323bcb3ef9bf4402779f1923bc312c73c SHA-256: 78acaf94cff7cece18ff465e9471ad121a00707c4a3caee90c38bdcdc04c45b4
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/479516143/how-to-download-minecraft-for-free-on-pc-game-hack PDF link annotation
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/roblox-hack-for-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/free-roblox-undertale_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/roblox-craftwars-cheats_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/koszulki-roblox-free_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/beyblad-rebirth-roblox-hack_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/kazok-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/robux-roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3096 22140 bytes
SHA-256: 158454402780c41c57d8889aff32b9d51e9fe6d5be1815a9606d3d3005fd1f46
font_01_sfnt_off000060de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DE 18732 bytes
SHA-256: 69a399aea7e8e9e53aabe761e00b32a0ad386cf270ee829a52c6d6d4a2342596

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