Malicious PDF — malware analysis report

Static analysis result for SHA-256 e26c820aa57cb1ba…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 20:06:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d53c4fc7e8ebd141488ee7aa79f2cdb5 SHA-1: bff05669d375f787cab6c7eb182fad028b8a2604 SHA-256: e26c820aa57cb1ba403acd9e5b216488f148b6f2f879840cddbe40cfc45b8bbe
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/how-to-get-free-cards-sets-for-coin-master-game-hack PDF link annotation
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-my-girlfriend-cheated-on-me-video_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-buy-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/pastebin-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hacks-for-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/pokemon-go-free-evolve-after-trade_GM1094591345.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-robux-with-a-fake-card_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/code-how-to-get-50-free-crystals-roblox-miners-haven_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hack-for-assasin-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/tiktok-free-movies_GM835599320.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-robux-just-enter-username-and-password_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_off000033af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33AF 23276 bytes
SHA-256: 87749f352ae934ef779a8df585acf9b0e698bd767506c3282a90ecf9958abcaf
font_01_sfnt_off00006836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6836 18336 bytes
SHA-256: 62ea76718c89f31a7c4f45c7431c072c385949a102d4bb066ded9903bb79e822

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