Malicious PDF — malware analysis report

Static analysis result for SHA-256 483c1261ebbf672f…

MALICIOUS

PDF

40.0 KB Created: 2021-04-27 02:11:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0b4a93e76d5db37ea691a01319bd91fe SHA-1: 43d9dd1070458de1d06a450a67f48e82fe5e6a3e SHA-256: 483c1261ebbf672f9598e4e339d091e2f50211463b6bcbb4349009bb953e8226
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures. The ML classifier also flagged this PDF with high confidence. While no scripts were directly extracted, the embedded links and the nature of the lures suggest an intent to redirect users to sites that likely host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/robux-earn-free-game-hack In PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hacks-para-infinity-anime-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-free-modles.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/can-you-go-to-jail-for-downloading-hacked-on-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/robux-free-logiciel.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-free-robux-legit-with-proof.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/assassin-roblox-hacked-uncopylocked.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/robux-hack-no-human-verification-android.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hack-roblox-2021-youtube.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_off0000420b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x420B 25084 bytes
SHA-256: 4cc034703e940c12ac0636509f77d0d1f25d46878cfd19707455b1967d3da0a6
font_01_sfnt_off00007aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAB 18244 bytes
SHA-256: a765ddc1c5049476c1d57e3a65caa5e60232b6811d6f0a0d5f0de2971f21f025

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