Malicious PDF — malware analysis report

Static analysis result for SHA-256 592c01ef2851de3b…

MALICIOUS

PDF

32.7 KB Created: 2021-07-20 04:44:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5e406cbf3c93fabd7890628a225bbebd SHA-1: 6411275784d7b2765b36a57812d0137ea3843527 SHA-256: 592c01ef2851de3b8a80833ffa858a25e5515eaa1de7d51c80879dcf3dca7fde
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game hacks or items, directing users to a known malicious redirector. The embedded link 'http://netcdn.tw/app/835599320/free-fans-on-tiktok-game-hack' is associated with malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to drive users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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.tw/app/835599320/free-fans-on-tiktok-game-hack In PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.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_off00002d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D09 22676 bytes
SHA-256: b2b74586073c85ae46796f0b9aee51f07c66f79c99ad8428df84cc2e58f75963
font_01_sfnt_off00005faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAF 17684 bytes
SHA-256: c4bad94708efb6699dc1c2f19668affdeb9abfa27890915707a4ba319d25bbbf

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