Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f590038407f45c8…

MALICIOUS

PDF

34.9 KB Created: 2021-06-25 00:41:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6ba12f3fa28294d444707da97aafee48 SHA-1: fb2595ffc616478cefbca67afeafc7fe2718f92c SHA-256: 9f590038407f45c810923dacbf4a66e7922419d6d7fc1fafccabd446bfb879e6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector, masquerading as game hacks and generators. The document body and embedded URLs suggest a lure for free in-game currency or cheats, likely leading to further malicious content or malware. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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-script-roblox-build-a-boat-game-hack In PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/supremacy-free-robux_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-cheat-the-new-roblox_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-spins_GM406889139.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/cheat-code-for-zoo-tycoon-money-roblox_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-executor-roblox_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-hack-roblox-games-without-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-do-the-sex-hack-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-no-survey_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_off00003088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3088 22472 bytes
SHA-256: ccc35b3a93524d3de21c62a05d3d1ca2fbd1eb01aa6e36b251e403f43cb082d4
font_01_sfnt_off0000625c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625C 19368 bytes
SHA-256: 1f8b5a43211bb1f8fec9aa30c746192f768086b4ffd7da11f3266350b8255067

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