Malicious PDF — malware analysis report

Static analysis result for SHA-256 12f4b7b690fd40bf…

MALICIOUS

PDF

33.5 KB Created: 2021-06-19 16:26:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e5b411089ad0b7db6dc4d6fecac1faf6 SHA-1: 77aaa9dcdb4a1f4d4ee4ad60d1ac01568269ae51 SHA-256: 12f4b7b690fd40bfb35c10f42f8fdbaac283dd48bcc045344300e2bc19b0b079
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, including one that promises a 'free generator' or 'game hack' for Roblox. The document body and heuristics indicate a lure to a malicious website, likely for credential harvesting or further malware delivery. No scripts were extracted, but the embedded URLs and redirector heuristics strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/hack-work-on-roblox-game-hack In PDF document text
    • http://brokermortgages.com/images/free-games-in-roblox_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/pokemon-go-free-healing_GM1094591345.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-giftcards-pin-on-roblox_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-download-mac-os-x-free_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-sued_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-cheat-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-roblox-music_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-app_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
font_00_sfnt_off00002dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DAD 21976 bytes
SHA-256: a43a3b02702ebd675995dc8b0e0649519d3497e678a6fccae0757bf96f2303e9
font_01_sfnt_off00005e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E38 18852 bytes
SHA-256: 4cf25125e54e783448185e44fbfb3930005a1805755de1bda665bf21e48c12ac

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