Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fdc9b7a561c1baf…

MALICIOUS

PDF

44.7 KB Created: 2021-06-09 04:55:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b03858184f5b30d61a00494e3f964bc0 SHA-1: 2aef9ba80992a7da67285c871d5aba89c041baaf SHA-256: 8fdc9b7a561c1bafd0e2824c354f2fdc2f17240d5683912b535cb9770926066b
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses a clipboard-command (paste-and-run) lure. 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 0.9865

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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 https://netcdn.tw/app/431946152/roblox-troll-players-script-hack-game-hack PDF link annotation
    • http://loriginedupain.org/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/coun-master_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000504c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x504C 24984 bytes
SHA-256: 30452c80451cba77fd23aa70cf6fc055c864f7a3484aa372d75e0a4d5551d913
font_01_sfnt_off000089ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89EE 18916 bytes
SHA-256: 260b97164d2b5ce515d6c2cadd8fc94524b9f661f6f6cf0bdf443d90d94bd86b

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