Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1a704366f5d8a9…

MALICIOUS

PDF

41.3 KB Created: 2021-05-12 23:14:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5f04df98e545b3e3cc20f898fcd10303 SHA-1: 15c47c80a9553696d2a6cf303d89dcb60293473d SHA-256: 0c1a704366f5d8a973d37d8baeaa9e7ca52b21eb08225ff745dbcb239aafb90e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free in-game currency, which are common lures for malicious activity. The heuristic firings indicate these links lead to known malicious redirectors and are likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an intent to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/cheat-codes-for-coin-master-game-hack In PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-online_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/hack-coin-master-free-spins_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
stream_003_off00004727.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4727 24776 bytes
SHA-256: 1f3bf91cc6b51e33cf1bdff005b49c181902e580718bfed32a7302396f83051e
font_01_sfnt_off00007fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD0 18052 bytes
SHA-256: c83c2968f9adc9e8284b9f918c7c7a0f7d3bbc65ccd05c6284fac2f5c017bb12

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