Malicious PDF — malware analysis report

Static analysis result for SHA-256 8205b9760f45fa52…

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 06:06:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ecd7f6a8005d40467117e0003bc4ab0 SHA-1: ad2d5c1e60285611e6e3ef234c7481a1db564d1f SHA-256: 8205b9760f45fa52f75d7f8b451af6465f8fe7dce61b5e476dab8c21257db6b3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to a known malicious domain, likely serving as a lure for free Robux or game hacks. The document body and heuristic firings confirm the presence of malicious redirector links, indicating an attempt to lead the user to potentially harmful content or further exploit stages. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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/free-robux-no-verify-human-game-hack In PDF document text
    • http://library.ulb.ac.id/repository/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-no-verify-ios_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/me-hackean-en-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/pubg-uc-dundle_GM1330123889.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/everything-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-into-a-roblox-accont_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/gear-giver-roblox-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/new-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-on-ipad_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_off00003066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3066 22072 bytes
SHA-256: dd99b2986f52dada45bb4876ccc55d6eec40a89780c322968e8fd6958ef78b08
font_01_sfnt_off00006189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6189 19412 bytes
SHA-256: a97720ab1804cf28fe36f09757bdb0e87c1caf092a3693bb3d77b1929870e0d6

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