Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e72221c0bd22a7d…

MALICIOUS

PDF

44.4 KB Created: 2021-05-15 07:49:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d1ec3c736f6abca6a6dc540d59fa8897 SHA-1: c1613eca74731208ca56c55f0cd6df38f52ae5b9 SHA-256: 4e72221c0bd22a7dd3af452b50d54f3b1c19a0b0a8f495ef5e277ce5ef70022e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and giveaways to trick users into clicking malicious links. The document contains multiple embedded URLs that redirect to known malicious infrastructure, likely serving as a gateway to further malicious content or exploits. The ML classifier also flagged this PDF with high confidence, indicating a malicious nature.

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 https://netcdn.xyz/app/431946152/free-robux-giveaway-game-hack In PDF document text
    • https://fordogtrainers.mx:443/images/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/coin-master-levels_GM406889139.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/free-roblox-characters_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/rbx-sites_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
stream_003_off00004c31.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C31 26096 bytes
SHA-256: 95442b4e37e70d5579aa54e67bc493185982ea47808de218c56447260c3515f8
font_01_sfnt_off000089a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A1 18820 bytes
SHA-256: a907981f6338d23acda294c558170907db38f399f16fdb2ca0bc536a0b707f6d

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