Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfacad3314e68ca7…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 23:49:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2f95b12147ceaa59aac23af67e5e6887 SHA-1: ddfd3273ac80c34d82e9cbbc696b1696430dc116 SHA-256: dfacad3314e68ca7f87c6cb6fe4f3e882b2b434880fe4e5ad50f4c98cd4e0f6f
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-robux-survey-game-hack PDF link annotation
    • http://digilib-unirow.ac.id/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/bl4z3games-co-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-robux-live-giveaway-group_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-synapse-x-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/robux-link_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-hair-roblox-not-model-boy_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-roblox-hacks-no-virus_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_off00002fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA2 22480 bytes
SHA-256: f6827617bb3f369e46875eba927030057f65e4f9cc8742a8ed06dee4ef8ee8d8
font_01_sfnt_off000061cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CF 19012 bytes
SHA-256: c0541a5d6200ab17734b4952abc6c0a8b533a715d99044a6ee13c1a52db76e39

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