Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb49b4bd6cdcbc58…

MALICIOUS

PDF

44.7 KB Created: 2021-04-27 10:42:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 68eafa2871d9f846a4e6db7bd34b536d SHA-1: f0e62a43c4834c72cea6b221e3d3ac2c35eab9f6 SHA-256: bb49b4bd6cdcbc58f232be889a98d0efc7615952e784d4109ee745b1142d85a2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that lead to a known malicious redirector, disguised as a 'free generator / game hack' lure. The document body and embedded links suggest a phishing attempt to trick users into visiting malicious websites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

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/431946152/free-csgo-skins-roblox-id-audio-game-hack In PDF document text
    • http://www.saburai.ac.id/elibrary//repository/como-tener-robux-gratis-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-hack-into-files-to-get-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-robux-no-buying-armanda.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-a-lot-of-robux-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hats-roblox-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-i-got-rthro-packages-for-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/descargar-programa-para-hackear-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-pins-for-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-login-free-account.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/cheat-engine-roblox-2021.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000042de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42DE 27616 bytes
SHA-256: 61de6b863fc17435bd9cc62f31b08da7433531a6cbb81574b987ea7311b47fb2
font_01_sfnt_off000081b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B2 2848 bytes
SHA-256: 4737c2778a085e0cb49e73f3b054b1a71e3f40720d213b4bfda97f95a31bfbf1
font_02_sfnt_off00008b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B74 18840 bytes
SHA-256: 5fa1296d58ee5fca1f356f87dad1711a97b0b3b4a21f5ffa19163a0a12429d74

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