Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ad4cd32e31e9f4b…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 11:59:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 037b4d7154fed4f328e2152ab90173ca SHA-1: da13108336b5ce4f0a458013e529ec66af40d233 SHA-256: 9ad4cd32e31e9f4bd099cbd1b9c40eab7340f5eb44c79af6bc9089bd88e41bbf
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/real-coin-master-hack-2021-game-hack PDF link annotation
    • http://stitqi.ac.id/website/repository/how-to-hack-to-get-more-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/pokemon-go-fest-free_GM1094591345.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-plates-of-fate-hack_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-tiktok-25-likes_GM835599320.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/how-to-hack-in-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/to-get-free-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_off00002fc7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FC7 22296 bytes
SHA-256: e46d5758c159f7cdfbab332820cdd011d90e2490752fefa1506307cb0a799e4c
font_01_sfnt_off000061b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B0 18480 bytes
SHA-256: f0581d3c4221426b4ac65b4c5e6d902d9e0c9709549af5e1d8ceac9b30b603c6

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