Malicious PDF — malware analysis report

Static analysis result for SHA-256 0827beec646c9bab…

MALICIOUS

PDF

42.0 KB Created: 2021-05-17 05:01:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: da6824c16383b15796bd0d0071ae1c29 SHA-1: cf805d969d54962a2a92de9586c9ee1f5db37cd7 SHA-256: 0827beec646c9bab14f971162cf144692e4f876a3c15e7d05b4a9607db81f0d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising free spins and coins for games like Coin Master. The document body and embedded URLs strongly suggest a phishing or scam lure, aiming to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious redirector links and the lure content indicate a high likelihood of a phishing or scam campaign.

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-free-spins-and-coins-2021-game-hack In PDF document text
    • http://britishcomics.com/images/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://britishcomics.com/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://britishcomics.com/images/no-robux_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/get-free-robux_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/minecraft-bedrock-edition-free-with-java_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_off0000496d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x496D 24320 bytes
SHA-256: c051a2d552ac87ccb93720f477e9d1a92d688d0a0b55c458bfefef44711e1859
font_01_sfnt_off00008118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8118 18460 bytes
SHA-256: c259e1f543e24e5bfe6ce8cf601a342cc00786119f62dbfadbed712250492c46

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