Malicious PDF — malware analysis report

Static analysis result for SHA-256 0515f0c7bf919776…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 06:56:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: cfbcef4d8ede5c8a117ed5e7efeb17f3 SHA-1: 7a4f87006262fd9c0d78e9ed2cc28286d25e6933 SHA-256: 0515f0c7bf91977618b599392aec2da3c1f58c3c8184eeb0473406871f448a3d
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/free-roblox-clothes-game-hack PDF link annotation
    • http://opac.disarpus.surakarta.go.id/repository/roblox-brick-cars-cheats_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-roblox-model_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/google-roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-hack-prestonplayz-roblox-account_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/is-there-anyway-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-servers-free_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-2021-no-survey-or-download_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-download-roblox-ccv3-hack_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-dragon-ball-rage-hack-december-2021_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-free-download-meepcity_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_off00002e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6C 22044 bytes
SHA-256: 781b83a31d5649710eb4766d39e8e8de2c82c46c43e85bc76bfd3f58a761aa31
font_01_sfnt_off00005ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAD 18920 bytes
SHA-256: 5a021ec2e3a1c815c5b2fe03a3b7d55c3926b1d1d0c335674de0888c5422ec2f

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