Malicious PDF — malware analysis report

Static analysis result for SHA-256 614a77edf05c7fab…

MALICIOUS

PDF

35.2 KB Created: 2021-06-26 11:43:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b8065e644c63b29fdf3184465bc480bd SHA-1: c9fe5e7e636861cfdcd533d4cdfcba91caa16acd SHA-256: 614a77edf05c7fab7615e4856a58d9b8a45c5bc950047976c487c9571f56d56c
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, that promise game hacks and generators. The document body and heuristics indicate a lure for free Robux or game cheats, often used to distribute malware or conduct phishing. While no scripts were directly extracted, the nature of the links and the lure suggest the intent is to drive users to malicious sites that may host further payloads or exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.co/app/431946152/robux-generator-hack-2021-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-ninja-assassin-hack-script_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-martial-arts-battle-arena-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-obc-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/noob-vs-pro-vs-hacker-roblox-blob-simulator_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-dt-oget-free-robux-and-free-catilog_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/robux-gratis-hackear_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-hack-init_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-call-meh-bob-roblox-youtubecom_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-me-free-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-passwort-hacken_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/click-for-free-robux_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_off0000348b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x348B 21504 bytes
SHA-256: 871966b78937dfbd070a169cb2064c9b0fe515a04d6dc8225b4084af3ca70104
font_01_sfnt_off000063d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D0 19228 bytes
SHA-256: 49da48479ac4894d3ed1a4e435434018edd10fd8800aed5f5fb6da45e4d29d6f

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