Malicious PDF — malware analysis report

Static analysis result for SHA-256 73ba53a0bebc404f…

MALICIOUS

PDF

36.2 KB Created: 2021-07-03 10:23:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7fde8794f00c160847c071f8a5e76ced SHA-1: 6f9acaca2c9d1e95ee08f3dc34ca7ea384ea7356 SHA-256: 73ba53a0bebc404f1064bdb77b9c88bcfd116dde79cbc4efe0adac629346bfe1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to external websites that advertise game hacks and generators, such as 'Coin Master' and 'Roblox'. One of the primary links, http://netcdn.co/app/406889139/coin-master-34-4-hack-download-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a lure for users to download further content, likely malicious.

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/406889139/coin-master-34-4-hack-download-game-hack In PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-free-catalog-items-pastebin_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/hack-roblox-pc-robux_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/hacks-for-imillion-robux_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-jailbreak-hack-teleport-download_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-roblox-generator-2021_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-pokemon-brick-bronze-cheat-engine_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/cheats-for-city-architect-roblox_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/hack-roblox-boxing-simulator-2_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/mega-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/tiktok-download-free-jio_GM835599320.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-hack-mago-by-out-wit_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_off00003627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3627 22720 bytes
SHA-256: da5c11e32cc5bd49334ab1f28a8bf30189b050e1a1d5f403dc94207d6d6b54f0
font_01_sfnt_off000068fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FA 18820 bytes
SHA-256: 95d9a4ff6578ddbc8256c368f788a600221936c4ac4fa8ddd89b69082de0302d

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