Malicious PDF — malware analysis report

Static analysis result for SHA-256 156b445e2abb048b…

MALICIOUS

PDF

27.6 KB Created: 2021-05-19 02:09:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8c3229eac04e31fc0194af1bab5cee4a SHA-1: 01f7381d7e09a75ee70c033d0c7b57622e9d8570 SHA-256: 156b445e2abb048b54ea39d033eb2b3c51fb23f18dd29f5e7b2af703934a8003
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links designed to lure users to a malicious redirector, masquerading as a 'game hack'. The ML classifier strongly indicates maliciousness, and the document body, though malformed, contains references to the lure. The primary IOC is the redirector URL which likely leads to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-gratis-game-hack In PDF document text
    • http://italianconnectionsleaford.co.uk/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/whats-robux_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/install-coin-master_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/roblox-images_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/get-me-free-robux_GM431946152.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C1 14292 bytes
SHA-256: 3588c7812497b09ae87c64427177e92f63f48d54efa282f4730fc4623ccbe0a4

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