Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d33b6d2dba056f…

MALICIOUS

PDF

45.7 KB Created: 2021-05-12 03:37:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 59448a07451d2c60ccb3c5f56363bcd2 SHA-1: 6e804ebfae6d063a8b31e7caa1eb4ae5381bf00a SHA-256: a0d33b6d2dba056f000938c1a442b73a7642bbf68e6db20cc8b6e042548b8f3d
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are designed to appear as generators for free game currency or items. The primary link directs to a known malicious redirector infrastructure. The document's structure and content strongly suggest a phishing or scam attempt aimed at tricking users into visiting potentially harmful sites.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/how-to-get-free-skins-in-roblox-game-hack In PDF document text
    • http://immo360grad.com/images/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-strategy_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.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_off00004a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A1C 28900 bytes
SHA-256: 01b7937102fee929d38e0ad668efcf94697bb13bf854c29f11a5b97ef51389bc
font_01_sfnt_off00008be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE5 19824 bytes
SHA-256: bda696a187aab5f1567c0df7fb53603232c687493ad24114b5b9df6c7064f978

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