Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee586cb1432fcc3…

MALICIOUS

PDF

43.8 KB Created: 2021-04-27 06:36:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f1a5afdf50018bd8005b896b90836942 SHA-1: e205c9503ed5f57d42951f08194f7aa2dfbf099f SHA-256: 8ee586cb1432fcc3693643d64df69e36d3aa004111bcd1e4dc4a73061dc6769d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to known malicious redirectors and lures users with the promise of a 'game hack'. The primary malicious URL identified is https://netcdn.xyz/app/431946152/descargar-programa-para-hackear-roblox-game-hack, which is likely used to distribute a second-stage payload. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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/descargar-programa-para-hackear-roblox-game-hack In PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-free-modles.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/cool-tshirts-for-roblox-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-cheat-on-you-roblox-girlfriend.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-robux-no-hacking-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-free-boombox-script.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-copy-game-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-face-roblox-makeup.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/robux-hack-no-human-verification-android.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-hack-de-dragon-ball-rage.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-do-you-get-the-hack-no-roblox.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_off00004038.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4038 25188 bytes
SHA-256: d64484c58629cf8f7d7415ccfd9184fc381eace0feaa9936e86508eff5b2e2e5
font_01_sfnt_off00007a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1F 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000086c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C7 19052 bytes
SHA-256: 60687956483c05fbcd00c19db7b7b07f6cd578708d8925f19bfa6385091b33f7

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