Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cde20a632979f84…

MALICIOUS

PDF

44.0 KB Created: 2021-05-16 12:00:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 670c7af85de21da57436e09e7cbe6e93 SHA-1: f8f2d9d0de916f0c02092f7b3a77484aefa80398 SHA-256: 1cde20a632979f845fc2a3cdf78923c13d5172fb43b3255d67b219a294753b50
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising "game hacks" and "robux generators". The document body and heuristics indicate a lure to trick users into clicking these links, which likely leads to further malicious content or malware downloads. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/withdraw-robux-game-hack In PDF document text
    • https://ourlady-elearning.com/userfiles/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/mcpe_GM479516143.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/getrobux-info_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-roblox-printables_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-free-spins-a2z-help_GM406889139.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_off000049a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A6 27136 bytes
SHA-256: 11013d830775477102634589602c45ae79f93b14a3f0d479f78e6fcc0f6fc4ca
font_01_sfnt_off0000875b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x875B 19004 bytes
SHA-256: 1af1b50e13b79861841ce88764da910b9f7fb16252a783c49889fdff3a55bba6

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