Malicious PDF — malware analysis report

Static analysis result for SHA-256 90d88b749983ab6c…

MALICIOUS

PDF

43.5 KB Created: 2021-05-12 18:03:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a049b5663de550cb90b5a211b9504ca5 SHA-1: 9d84459a8f9f07c0694b72b65b7f592ff693f516 SHA-256: 90d88b749983ab6c12e5c931b684612c9688222df3e740e6d5b933dd4d5546af
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 0.9969

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/431946152/free-robux-with-no-verification-game-hack PDF link annotation
    • http://www.sixtenlogistics.com/uploads/files/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/rbx-sites_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/rbx-claim_GM431946152.pdfIn PDF document text
    • http://www.sixtenlogistics.com/uploads/files/files/how-to-get-free-robux-easy_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_003_off00004c11.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C11 24992 bytes
SHA-256: c7b898fd80072cec22185a85a094af8650ee94f6049293f27634045616370f3b
font_01_sfnt_off000085a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A2 18964 bytes
SHA-256: 882e97bebd076dae688415b0184bb224dca7d5b64082a0b27c077a0c76cfc979

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