Malicious PDF — malware analysis report

Static analysis result for SHA-256 4676bbe8c10e474d…

MALICIOUS

PDF

34.4 KB Created: 2021-06-17 20:14:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: cb0fc82c18cb8949d07afb0e1b6776a7 SHA-1: 4054550bfd8bf2a5ba281e042bb6f53895684a56 SHA-256: 4676bbe8c10e474d766e9fa2bd6a135f645e87c8ffccbb63adf95223f05ee854
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to known malicious infrastructure. The document body and embedded URLs reinforce this, presenting a deceptive offer for game-related content. While no scripts were extracted, the primary attack vector appears to be social engineering via a malicious link within the document.

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-roblox-face-rig-game-hack In PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/hacks-de-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-no-scam-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-phantom-forces-anti-cheat-bypass_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-cool-free-girl-looks_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/pubg-uc-cheap-price_GM1330123889.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-black-panther-mask-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/robux-hack-no-verification-human_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/hacks-roblox-csgo_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-spins-for-today_GM406889139.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_off000030d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D7 22368 bytes
SHA-256: a729bb0e1a887588273212bec28616fc646261e9437610c4738e89b0125365f6
font_01_sfnt_off0000627b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627B 18768 bytes
SHA-256: 4793ee7e90c03dbffcbc602daee9b074e1e3078fa42ac54773fd3dfcbe77a669

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