Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a524d511b8bf861…

MALICIOUS

PDF

35.4 KB Created: 2021-06-22 20:01:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b6ab1b1efd8d687ce9b93d3b7e861b16 SHA-1: 5ef16d7fd188e4dc27d7adefd2d64603d6633706 SHA-256: 9a524d511b8bf861fe8455a4c32f2a338213b48475e731a1f69d779d3326ea6b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous URLs advertising game hacks and cheats, with one specific URL identified as a potential download source. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used for malicious purposes, likely to distribute malware or lead users to phishing sites. No scripts were extracted from this sample, but the presence of embedded URLs and the ML detection suggest a lure for downloading unwanted software.

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/roblox-retail-tycoon-money-hack-game-hack In PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/pubg-uc-global_GM1330123889.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/ghost-simulator-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/pokemon-go-free-kr-hack_GM1094591345.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/tiktok-free-gallery_GM835599320.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/roblox-bad-business-hacks_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/how-to-get-free-roblox-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
font_00_sfnt_off00003226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3226 22596 bytes
SHA-256: 68f63ba7efd2b1dd2f1697e3bcb5b496d82eb9f5531fb92921c80e8dc1a7559c
font_01_sfnt_off000064b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B1 19256 bytes
SHA-256: 903f67faaaa18e409fbc85007838036150324b40e5ece10caf8bc6f6feeefa7b

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