Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8e73ccafe9267e2…

MALICIOUS

PDF

41.3 KB Created: 2021-05-15 14:50:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4348d13804309e181194bb35b0a69682 SHA-1: c94930035bd98884e5f5fe62d352d34889274d3e SHA-256: b8e73ccafe9267e2ba9439c794e4966eb77716b38f0aab7f93f791d62e43008e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of free game mods and cheats to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or exploits. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to exploit vulnerabilities or deliver a secondary payload, aligning with common PDF-based attack vectors.

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/479516143/how-to-get-free-mods-in-minecraft-game-hack In PDF document text
    • https://www.littlerockholidayresort.co.za/images/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/minecraft-items_GM479516143.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-free-robux_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/coin-and-spin_GM406889139.pdfIn PDF document text
    • https://www.littlerockholidayresort.co.za/images/free-roblox-passwords_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_off00004a00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A00 23896 bytes
SHA-256: ae78d67ff718ad12a1a18cb1b078d42f4f86ffd469bd821291127b0e3780827e
font_01_sfnt_off00007feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEB 18048 bytes
SHA-256: 95040d2bfc9286ed3808f083adb9ea42f8ede8dd0a13d8009d14cd8c99c6b7c0

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