Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4fe2a523e946d2e…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 08:45:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6d54f6a994706be334d8a4271b6166e4 SHA-1: c5a4e81d4a6dd8fd50eaec6c17bb2f305211cf14 SHA-256: f4fe2a523e946d2e747b2f7976891fbaf2faf4f806052ad9311f833976d97e78
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that are identified as malicious redirectors, specifically luring users with 'free generator' or 'game hack' content. The primary malicious URL identified is http://netcdn.tw/app/479516143/hacks-for-minecraft-bedrock-game-hack. This indicates a phishing or scam attempt designed to lead users to potentially harmful websites.

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/479516143/hacks-for-minecraft-bedrock-game-hack In PDF document text
    • http://library.ulb.ac.id//repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-much-you-get-banned-for-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-in-someones-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-highschool-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-dll-hack-roghoul_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hack-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-skina-free-copy-paste_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/phantoms-forces-roblox-hack-weapon_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/assassin-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-page-demo_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-the-stuff-from-roblox-hack-week-2021_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_off00003314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3314 23240 bytes
SHA-256: 7e34759a30021f17d13cec72f739f5f5fa16e42abb69e4df798fb5258bc420a8
font_01_sfnt_off0000666b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x666B 18560 bytes
SHA-256: 4fc295dce404a6ce2538edafe463176f3647b846dab467762a183e8310dc408e

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