Malicious PDF — malware analysis report

Static analysis result for SHA-256 c54471c46dce81fe…

MALICIOUS

PDF

43.0 KB Created: 2021-05-16 23:35:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d935dbdd96290beb2734c999a5c74460 SHA-1: 6d47e62dee888d38c5389ad1490e18abffa6f853 SHA-256: c54471c46dce81feb67a3ffbfb89a6e7bba7f67070dfc1c9fe5b4330c49ec2b5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'free generators' for games like Coin Master. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lure users to malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection is the primary function.

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/coin-master-hack-cheat-generator-coins-and-spins-unlimited-game-hack In PDF document text
    • http://jdlrelocation.com/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/coinmaster-links_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://jdlrelocation.com/images/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/coin-spin_GM406889139.pdfIn PDF document text
    • http://jdlrelocation.com/images/minecraft-pocket-edition-free-apk_GM479516143.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_off00004978.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4978 25556 bytes
SHA-256: 1f2e3e8153ad329af21b22824df74ad332183d9505f244816ed2b23ec57bc08c
font_01_sfnt_off000084a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A1 18752 bytes
SHA-256: d038f63deb69970dd3aa7179a39df09dda1c564ff6c14abbabcc0eee78e38f8c

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