Malicious PDF — malware analysis report

Static analysis result for SHA-256 526f443106edb82d…

MALICIOUS

PDF

44.6 KB Created: 2021-06-09 10:34:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 749aa111980f341005461d7d52c6b48e SHA-1: 2e837f7da30f7f436e08bd20b83f6201442b261d SHA-256: 526f443106edb82d45d0c114e840398570453934865f9ccb3f788023d4bf21b7
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/free-robux-hack-script-2021-game-hack PDF link annotation
    • http://bunadsmaria.com/images/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/free-coin-app_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/free-robux-getter_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off000050a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A4 24436 bytes
SHA-256: 543a20429ab774c5ca0a021296109b0e6fd1e35fed5a30d890309bfd94500e87
font_01_sfnt_off000088de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88DE 19212 bytes
SHA-256: 2640031e72d970a0e785708738cd7c78da940211bafd8a5d8e72967873232574

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