Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be5325b22ec8905…

MALICIOUS

PDF

41.7 KB Created: 2021-05-11 19:37:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ee4bcc937f7b7574fe39757ea30cc6fe SHA-1: 9bfa718877b4557e9d916ba1f8da8cbfa6389de1 SHA-256: 8be5325b22ec890592d0d6fc4beb2becaff9c42a58d4e3a3e2d7b00f273eb03e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and free items. The primary malicious URL identified is https://netcdn.xyz/app/406889139/facebook-coin-master-free-spins-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a lure to a malicious redirector, likely intended to deliver a secondary payload or phish for credentials.

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/facebook-coin-master-free-spins-game-hack In PDF document text
    • https://www.gymun.cz/images/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/hack-robux_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-get-free-unlimited-robux_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
stream_003_off0000476a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x476A 25244 bytes
SHA-256: adc8d67933e58c9c57506c636bbcc343d34bfee7b6851b468a482977a97aa988
font_01_sfnt_off000080c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C5 18212 bytes
SHA-256: 04111eee9c2a2756cf2b040d38ecbe9c25ace8b6aa6ca53a6765e3abdcc42c50

Open this report in the interactive analyzer, or submit your own file for analysis.