Malicious PDF — malware analysis report

Static analysis result for SHA-256 64310e5e170538fd…

MALICIOUS

PDF

44.5 KB Created: 2021-06-08 11:32:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f150cd67393b4176c3a3b79e1f67cc24 SHA-1: 11b53eb64f951519ce139185d9f988198f9808f8 SHA-256: 64310e5e170538fd953882fe0781e0f7f9a841dc71a41ec0e7ebdb621e986132
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 0.9865

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 https://netcdn.tw/app/431946152/how-do-you-hack-players-on-roblox-game-hack PDF link annotation
    • http://immo360grad.com/images/tiktok-free-package-dialog_GM835599320.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-today-hack_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/pokemon-go-free-things_GM1094591345.pdfIn PDF document text
    • http://immo360grad.com/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/rbx-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-free-bc-on-roblox-pc_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-codes-no-human-verification_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_004_off00005058.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5058 24792 bytes
SHA-256: 8f142b40267fa1655bb48319160916046ea6a913c2cbdc0151174f92c5b7b1cd
font_01_sfnt_off000088cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CB 19152 bytes
SHA-256: b6622d7faf544c8be16877e0fb6cb59415468562a279b29e3aa9e3317f4b9d62

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