Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a46b9ecb02f969e…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 15:50:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 53c0f9d70309fbc1ddae04e30f6d0206 SHA-1: 98dae07ffae8296c89bc6edefe140a60cd621fd4 SHA-256: 7a46b9ecb02f969e2b52f4af4666b90cf5d87e33242a0dab5cc848eb5b890951
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links and document body text that promote a 'game hack generator' and redirect to malicious infrastructure. The heuristic firings confirm the presence of malicious redirector links and a lure for free game-related content. While no scripts were extracted, the document's structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/just-go-to-mobihack-roblox-hack-game-hack In PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/free-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/tiktok-free-advertising_GM835599320.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/como-obrtener-10000-robux-de-verdad-hack_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/robux-xyz_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/mcpe-download_GM479516143.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/pubg-uc-hack-without-human-verification_GM1330123889.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/free-executor-roblox_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/how-to-fly-using-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/rewardex-robux_GM431946152.pdfIn PDF document text
    • https://zustsearch.com/uploaded_files/userfiles/files/free-robux-no-offers_GM431946152.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
font_00_sfnt_off000032e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E9 22296 bytes
SHA-256: 8abaa1c1bb0c0ee5e520ef0ba61864b6ab9946f5a07cd4c9124040afa3bd18da
font_01_sfnt_off0000648b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648B 19580 bytes
SHA-256: 87f70a0185bff57c008d0bacc357a5dd178983251a4fc521876aff8b87a9db2e

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