Malicious PDF — malware analysis report

Static analysis result for SHA-256 7beb918b4f93d184…

MALICIOUS

PDF

33.0 KB Created: 2021-07-06 05:15:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 1c9cb52fc98dec138903a2a9ebb9b812 SHA-1: f90a01f1bb26f486851bddaccab08fb867854493 SHA-256: 7beb918b4f93d184f723f6ed53dd48541fd49ae8778f9f4a7af97ac1bee9bd0a
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into visiting malicious websites. It contains links to known malicious redirectors and IP addresses hosting further malicious PDFs, indicating a clear intent to lead users to potentially harmful content. The document body and embedded URLs suggest a campaign focused on popular online games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.tw/app/406889139/google-coin-master-free-spins-game-hack In PDF document text
    • http://36.94.36.7/elib//repository/coin-master-hack-mod-apk_GM406889139.pdfPDF link annotation
    • http://36.94.36.7/elib/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/roblox-grand-continental-railways-free_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/i-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/rbx-robux_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/woman-roblox_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-clothes-roblox-codes_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coinmaster-links_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D71 22116 bytes
SHA-256: 3a0a9cb23aa94da5cfefaca045d570381f1dca40cffbf2721f40b4f7224dc97f
font_01_sfnt_off00005e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3A 18248 bytes
SHA-256: 030bed7090460e4d71b0ce795308f81d11b161da8a2958b6b82163bc1faa59de

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