Malicious PDF — malware analysis report

Static analysis result for SHA-256 76fe7e6a76dc2880…

MALICIOUS

PDF

34.8 KB Created: 2021-06-25 23:48:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ff0c7c65b1a549ff79e5eeac061eee4c SHA-1: 6b3a1e90a3e9ee92a0078732773d0d79847c6ea4 SHA-256: 76fe7e6a76dc28802a200ae6630d79f172dea5e50b3fcada292caffeb86a6fdc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free hacks' for games like Roblox. The document body and heuristics confirm the lure is to trick users into clicking these links, likely leading to malware download or further phishing attempts. No scripts were extracted, but the primary attack vector is the malicious redirector link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-hacks-inspect-roblox-game-hack In PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-use-cheat-engine-on-roblox-without-shutdown-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-hack-roblox-to-get-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/hacking-lessons-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-seniac_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-codes-for-roblox-mineing-sim_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/google-moon-active_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/earn-free-robux-roblox-game_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-roblox-pokemon-go_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off0000318d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318D 22172 bytes
SHA-256: 132f62f4cfb8f91ccac1622e11e317cd5645e09d84f4b0d2d919fe4a60b5a52b
font_01_sfnt_off000062a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A5 19100 bytes
SHA-256: 4c4ba127a2b59b4690c262af76152443a4343221a57cd40b86d8bbc1435cae11

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