Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c5eac75de0b7208…

MALICIOUS

PDF

50.9 KB Created: 2021-06-11 11:23:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ac276428394f3311ae445ba4f23a1341 SHA-1: 99cf9da75859cd3da48210e5ff0cbc3ba85811a4 SHA-256: 3c5eac75de0b720802c7e051e71fb9b27c956a0417f7cd6682c64bb087a72969
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, masquerading as game hacks. The primary link directs users to a site offering 'hacking Roblox with code noclip game hack'. The document body and embedded links suggest a lure to trick users into visiting malicious sites, likely for credential harvesting or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9724

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 https://netcdn.tw/app/431946152/hacking-roblox-with-code-noclip-game-hack In PDF document text
    • http://elibrary.uniyap.ac.id/repository/2021-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/lingojam-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/btools-hacks-roblox-2021-barbaric-gamer-oficial_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/roblox-free-2021-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/robux-hack-downloa_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/bloxy-world-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/how-to-open-cheat-engine-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/free-printable-roblox-coloring-pictures_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/roblox-how-to-hack-filtering-enabled-games_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/roblox-present-free-object_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/roblox-hack-client-android_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/roblox-how-to-get-free-robux-real_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/how-to-get-free-diamonds-on-royale-high-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/hack-roblox-juillet-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/free-roblox-hacks-net_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/growtrooperz-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/free-roblox-download-no-virus_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/free-robux-dispenser_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/robux-gratis-2021-hack_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005376.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5376 27388 bytes
SHA-256: 01abbb24f6e98fc8ffbf78e8bc8ddd0145fd7232b364426a449751ceaabcc80b
font_01_sfnt_off000093d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D2 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0E4 19408 bytes
SHA-256: f07320dcb6a9d57f5e37aae37f831309b34ca32d2eaf4b78ad7e1d96be1b9bab

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