Malicious PDF — malware analysis report

Static analysis result for SHA-256 f68ebd342508ea31…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 10:40:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7982dc25ad144b87bc30c6b458f94f74 SHA-1: 5d738e378cac92d4597947bcd171607a74734faf SHA-256: f68ebd342508ea310124d1516033327068d4e834d84c23eb0b70aaefede15aae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/431946152/roblox-game-free-download-game-hack. The document body and heuristics suggest a lure related to game hacks and free generators, aiming to trick users into clicking these links. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a phishing or social engineering attack.

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.tw/app/431946152/roblox-game-free-download-game-hack In PDF document text
    • https://i-tech.ac.id/perpus/repository/poke-preston-roblox-hack_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-cheatus-limited_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/secret-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-how-to-get-robux-for-free-2021-no-inspect_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/an-easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-prison-life-hacking_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/rxfastml-generator-2021-robux-hack_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-synapse-roblox-exploit-13-05-18_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-robux-hack-november-2021_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/fencing-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-cookie-editor-hack_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-online-robux-generator-no-download_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-prison-life-speed-hack_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/can-i-hacked-my-own-roblox-account-got_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-how-to-noclip-with-cheat-engine_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_off00002f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5C 21832 bytes
SHA-256: d2862c0fb15dee2a949e39ea5e1f8c387e04f9ef9e27601978f79f20217fb0f2
font_01_sfnt_off00005f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9D 19416 bytes
SHA-256: a2f27b52acabb0167f9a542fed976ebd18b11ecd499185880ec5860d5673245b

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