Malicious PDF — malware analysis report

Static analysis result for SHA-256 e060b7adb6ab2fb3…

MALICIOUS

PDF

23.4 KB Created: 2021-07-05 22:03:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: a4e15571c3850cebff353e1cc089a83a SHA-1: 3cbe9aa7a142deb1a6ae711e199b33a2ac26e274 SHA-256: e060b7adb6ab2fb39382e72713363509b8a7075fd91c3a49ef23dbf3bafa4b09
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as "game hacks" and "free spins" to entice users. The primary malicious URL identified is http://netcdn.tw/app/406889139/legit-coin-master-hack-no-human-verification-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 3

  • 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.
  • 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.tw/app/406889139/legit-coin-master-hack-no-human-verification-game-hack In PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/robux-earning-sites_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-vehicler-simulator-afk-money-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000317f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x317F 18833 bytes
SHA-256: bea91f4ade87d1f589fc50b5739be104db7cacfb9bd21d7dc19039abb2499eda

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