Malicious PDF — malware analysis report

Static analysis result for SHA-256 82b7418fced07f8f…

MALICIOUS

PDF

25.5 KB Created: 2021-06-30 10:40:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b5b2588f9dd6998f40ec6be8b9c87338 SHA-1: d2eb0b982862b6cf8b347016b55c6235b77ed46d SHA-256: 82b7418fced07f8f60d73627e50533dfba11e8ac7c8d2f7ecc8aaf31825c6a70
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically luring users with 'game hack' and 'free generator' themes. These links point to infrastructure known for distributing malware. Although no scripts were extracted, the embedded links and the nature of the lures strongly suggest a phishing or social engineering attack aimed at redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 3

  • 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.
  • 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-weight-lift-sim-3-hack-game-hack In PDF document text
    • http://elibrary.perludem.org/repository/tiktok-free-view-like-video_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-group-shop_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/exploit-roblox-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/videos-de-como-ser-hacker-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-rc7-command-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hacker-de-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/gamecraft-org-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-app-download-robux-genurater_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/freerobuxrobloxhacknosurveynohumanverification2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-phantom-forces-hack-reddit_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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000346e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x346E 23128 bytes
SHA-256: 707f5c0e9c8a05b67c3abb67dc0c5c975417a12ace549c20391d852c9fc95730

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