Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5bc45ac57133672…

MALICIOUS

PDF

47.5 KB Created: 2021-04-25 15:13:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 49d4aff6917ee5e66b8de85ce014216e SHA-1: de0e5bdb1cf667b5b54e15ca065d17422958bc3d SHA-256: f5bc45ac57133672e8b83ee994c6d7229bcff5b09974ddc36d57bd358783fe63
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and generators. The primary malicious URL identified is https://netcdn.xyz/app/431946152/roblox-games-apk-free-download-game-hack. The document body also contains a call-to-action phrase, reinforcing the lure. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

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/roblox-games-apk-free-download-game-hack In PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-for-children.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-parkour-point-hack.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/get-hacked-roblox-account-back.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/vashta-roblox-hack.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/rblx-gg-robux-free.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/guuuddinfo-roblox-free.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-robux-for-real-not-fake-2021.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-cam-script-roblox.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/play-roblox-for-free-but-no-log-in.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/my-roblox-account-has-beem-hacked.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
font_00_sfnt_off000042f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42F3 23984 bytes
SHA-256: 6f2f9b02847f53bcb5a0460c0439cada0df12d6f2cce63dfff900236537765ed
font_01_sfnt_off000079b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B3 11440 bytes
SHA-256: 154d59d1680f2d1e38ccb783d6997f344290d121007e51df331726de4128c12e
font_02_sfnt_off000094d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94D3 19288 bytes
SHA-256: 887a0e7c92a37674b92029fabd01830432f0d2b81079f0b84988c0c0ded602d9

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