Malicious PDF — malware analysis report

Static analysis result for SHA-256 98b5d0443755260a…

MALICIOUS

PDF

43.9 KB Created: 2021-05-16 16:42:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4dade490353c09cd430103aede93f4df SHA-1: ad3522ded7685a4faa3843d9785d84f36f31df11 SHA-256: 98b5d0443755260a7909725e31d78476e9f1ccd8add0034b9f150ffa792ec64a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure, 'Bloxland Earn Free Robux', directs users to a URL associated with malicious activity. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at redirecting users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/bloxland-earn-free-robux-game-hack In PDF document text
    • https://uofk.edu/images/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • https://uofk.edu/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://uofk.edu/images/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://uofk.edu/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://uofk.edu/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://uofk.edu/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • https://uofk.edu/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://uofk.edu/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://uofk.edu/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://uofk.edu/images/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://uofk.edu/images/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://uofk.edu/images/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://uofk.edu/images/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • https://uofk.edu/images/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • https://uofk.edu/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://uofk.edu/images/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • https://uofk.edu/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://uofk.edu/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://uofk.edu/images/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • https://uofk.edu/images/robux-free-com_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_off00004bca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BCA 26396 bytes
SHA-256: 5b36936fed5f2a45a16908ee4a4124999d854eb5d3a792bb8562779726f40858
font_01_sfnt_off0000888f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888F 18492 bytes
SHA-256: fc87a0e838629003b9f405fc2c8429e0a8062f092f4b8629944097aaaaee9c58

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