Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac6d29ac6a118e50…

MALICIOUS

PDF

35.2 KB Created: 2021-06-30 17:08:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1c69d01cd36ad5e0493ebb6fad2f9c13 SHA-1: 5d5c62f937dfb8be2d8b4ffd08d3e8c237c3ad6e SHA-256: ac6d29ac6a118e5024dc95a4f43b6bafdce93b193667a8432b45829c62116332
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically advertising 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious with high confidence. The document body and embedded URLs suggest a social engineering attempt to trick users into visiting potentially harmful sites.

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/roblox-free-items-from-catalog-game-hack In PDF document text
    • http://library.ulb.ac.id/repository/code-for-generate-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-app-cheats_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hacks-fr-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hacker-roblox-wls2_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/tiktok-free-books-website_GM835599320.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/mocap-dancing-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/fotos-de-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/gg-hack-client-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-booga-booga-admin-script-hack-work_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hack-to-join-empty-server-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-booga-booga-free-acounts_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-fashion-frenzy-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
stream_002_off00003109.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3109 22960 bytes
SHA-256: 6ca72519a8479ca4874a3fe79fc612cb736a4f5182659ca41c0e7dcb0d29cc15
font_01_sfnt_off000064cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CB 19016 bytes
SHA-256: 0bade488e3c1d1c60e8b54fd1caa458d1632ccc940f035970c3198ce5271b262

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