Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ffc36f02bd355cf…

MALICIOUS

PDF

42.9 KB Created: 2021-05-18 00:38:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: afb01659c3bb690a2a941857134b91ca SHA-1: 5b91a37ac2082b63ba5fec6f2c089186b123c6bd SHA-256: 9ffc36f02bd355cf09a3bd5253e8513a7a876e602bcb09c58baff6bb64076dc4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-free-master-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to exploit vulnerabilities or trick users into navigating to malicious sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-free-master-game-hack In PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/roblox-cp_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004db3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DB3 26152 bytes
SHA-256: 8622f3d698cc8a85db6cbb729faaa78a8e04ac180c0f3276acafe9fa1b1b4c52
font_01_sfnt_off00008721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8721 17712 bytes
SHA-256: d81df6b65cf0bb045415549e23d0eb9d7e4a9ed7c869613af9af95d8dd41029c

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