Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f8323285cb63ee7…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 04:05:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cd1d425888690e7dc1d5765fc72ebae0 SHA-1: abeba0d8523966c0044f2b8445677f62620251d3 SHA-256: 8f8323285cb63ee7a84facd072f917028f36dce694b00374babd30541a80ff96
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/406889139/free-coins-for-flip-master-game-hack PDF link annotation
    • http://slims.abulyatama.ac.id/repository/good-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/pubg-uc-kaufen_GM1330123889.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/robux-verification-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-model-death-star-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/tbc-roblox-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/is-esp-roblox-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-cheat-tool-download-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/2nd-best-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/robux-match_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-jilbreak-money-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hacks-for-roblox-parkour-fly_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/robux-hack-today_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_off00002f5a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F5A 22956 bytes
SHA-256: b7f79b668751160e844320a47fb24f327f55250817c5da8dd57cccdf87370fac
font_01_sfnt_off0000627b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627B 18248 bytes
SHA-256: 15af221dd5c3311a73758cd56b9e13e8fd3ef2e59b1801455b5f1f458413cd9b

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