Malicious PDF — malware analysis report

Static analysis result for SHA-256 076458065cc2b769…

MALICIOUS

PDF

44.8 KB Created: 2021-05-13 16:06:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8076cd74124eb0f532fb135410ac5023 SHA-1: a1191c96bd7cfa9edd3e056edbf64d04287eece9 SHA-256: 076458065cc2b769ba920dd9c5215cc0a2358bc5d99d7200b024b52cf10d7998
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as "free generator" or "game hack" lures. The presence of a "download" button further encourages user interaction with these malicious links. The document's content and embedded links strongly suggest 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 https://netcdn.xyz/app/406889139/legit-free-spins-coin-master-game-hack In PDF document text
    • http://fmbompastor.com.br/images/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bc0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BC0 29844 bytes
SHA-256: ed9f2fe8bdf1ec95ea12ca43f43d8dad2a756cab951be011e5afa9b64df3447b
font_01_sfnt_off00008d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D58 18176 bytes
SHA-256: 0e4f5fc6ff2fec7c34f7a60300b1fa14fa22cd043badad59a9fad54dc28be7cf

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