Malicious PDF — malware analysis report

Static analysis result for SHA-256 db4c0598182c76bb…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 07:10:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c834396887349424bc7835920bbd5353 SHA-1: a42f9aa6d2858997df75c3bdde24545308431362 SHA-256: db4c0598182c76bb0fd3a1249a3ca7f5328f2fa2c00ebb2a405ee0d6cca3e716
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a malicious redirector, masquerading as a game hack generator. The document body explicitly mentions 'How To Hack Roblox Robux' and includes a call to action to access a 'Roblox Generator'. This indicates a phishing or scam attempt designed to trick users into visiting malicious sites. No scripts were extracted, but the embedded URLs and the lure content strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.tw/app/431946152/how-to-hack-roblox-robux-with-cheat-engine-66-game-hack In PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/commands-for-roblox-free-rubux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-bloxburgh-hacks_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-generator_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-ultimate-gamer-365-new_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-jailbreak-hacks-for-money_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/zombie-rush-roblox-hack-v3rmillion_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-robux-belen_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-house-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/is-pokemon-go-free-to-download_GM1094591345.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/boku-no-roblox-quirk-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-full-game-free-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/vip-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-free-gift-card-org-hack_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
font_00_sfnt_off00002a77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A77 22824 bytes
SHA-256: 1762c722ce45e472a4ed1498e1c3a1e3815ad5ec9f6ab0665afe3976d83879e3
font_01_sfnt_off00005da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA8 19532 bytes
SHA-256: 6029c4c8fad7e7ae92d38dc3223ae9dd97437b9167287f661ce8551b76f36b66

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