Malicious PDF — malware analysis report

Static analysis result for SHA-256 d419db755fefd524…

MALICIOUS

PDF

33.7 KB Created: 2021-06-30 14:05:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f258a438462655a95829b4798aa3bc22 SHA-1: 6aff256ef74a6d911adf4cff5f73185640617cf3 SHA-256: d419db755fefd524bf1161e59d935b9ed506afe63df37049210aae759300cf94
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that lead to a known malicious redirector, specifically http://netcdn.co/app/431946152/free-roblox-usernames-and-passwords-game-hack. The document body and heuristics indicate a lure for game hacks or currency, a common social engineering tactic. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence suggest a high likelihood of a phishing or malware distribution attempt.

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.co/app/431946152/free-roblox-usernames-and-passwords-game-hack In PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/electrification-free-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/free-robux-hack-youtube_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/roblox-hacker-cods-fr-redline_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/how-to-get-vip-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/hacker-speech-roblox_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/roblox-free-purple-eye-thing_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • https://e-learningman17jakarta.com/__statics/gudangsoal/files/redline-cheats-roblox_GM431946152.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
font_00_sfnt_off00002c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3A 22392 bytes
SHA-256: cad5376005f48eaa4f0957aff8cf8f1a45f9bc86ea4e1a36e85d8ba0e62f9fdd
font_01_sfnt_off00005e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E21 19404 bytes
SHA-256: b4d7e0718cadd6570b52e100aa7612a9b6b6c25f53d59374595f6af98c828d97

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