Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7f2a1ac30e71ffa…

MALICIOUS

PDF

43.0 KB Created: 2021-05-19 13:22:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 696c867344eab8ed001c9f754bb6908c SHA-1: aaf08f23471b45bb4286d1e96983a35edfe642cf SHA-256: b7f2a1ac30e71ffa657987357c2e911ce391311461f254ada043e7af09c181d2
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 0.9971

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.xyz/app/1330123889/pubg-uc-rate-in-pakistan-game-hack PDF link annotation
    • http://kulturlandschaften.eu/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/wurst_GM479516143.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/robux-codes_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/tiktok-free-view-iphone-video_GM835599320.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/roblox-bloxburg-free-money_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_003_off0000474f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x474F 28536 bytes
SHA-256: 00c172ffdbdbea09ccba4587b362d7960bea80d3cedaa2e1b3fe528bd4d4eb4e
font_01_sfnt_off00008533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8533 18520 bytes
SHA-256: 62ca9f776cc86b443e9e9d4a710821a7289ea55283ce8d8229f110cfc2488a71

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