Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a59c138a740d669…

MALICIOUS

PDF

35.9 KB Created: 2021-07-04 15:07:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a508b963f3412768044c275678aa2dc6 SHA-1: e22646ede3eecabaa360ee15aed0d7d76fd7c1d2 SHA-256: 8a59c138a740d6695fd1f4b16c1d0b4f6c30d2899592d509a9b57d641e4dc6e5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to websites offering game hacks and free in-game currency, such as 'coin-master-free-coins-and-spins-link-2021-game-hack'. The presence of these lures, combined with a high ML classifier score, indicates a phishing or scam attempt. The document likely serves as a lure to direct users to malicious websites that may host further malware or phishing content.

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/406889139/coin-master-free-coins-and-spins-link-2021-game-hack PDF link annotation
    • http://poltekkesbanten.ac.id/e-lib/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-hacks-download-2021-with-virus-total_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/pubg-uc-with-jazz-cash_GM1330123889.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-look-like-a-guest-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-fast-and-easy-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-free-injector_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/pokemon-go-free-10km-egg_GM1094591345.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-roblox-with-v3rmillion_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-cards-me-com_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-account-hacken_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-mod-menu-free-download_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-meep-city-play-online-free_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-do-i-get-robux_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
stream_002_off00003398.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3398 23164 bytes
SHA-256: 6be4c269976522cb539f275bd913253bb24f06bc07a54bcfa921f61a11add780
font_01_sfnt_off000067c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C3 18920 bytes
SHA-256: ee952cd90f4f1b1265ef728a882b2e1c43fdcfe70326b29f6fa47f3abfb19b4c

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