Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c507529e4ae1f2b…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 12:25:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 1a9a4dae9f6aa223540916111c3f1bcd SHA-1: 0a75d809d406c7d845714fad599b2442a422a6d6 SHA-256: 6c507529e4ae1f2b9ac6641a53e351b4969a9938526701f267aade99a9aa236b
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on potentially malicious content, disguised as free generators or game hacks. The document's structure and embedded URLs indicate a tactic to drive traffic to SEO link farms and redirectors, likely for further malicious activity or ad fraud. No scripts were extracted, but the PDF's nature suggests it acts as a gateway to other malicious resources.

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 http://netcdn.co/app/431946152/roblox-beyond-free-vip-server-game-hack In PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-hack-on-ipad_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/hack-pour-avoir-des-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-on-a-tablet_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/scripts-for-free-robux_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/minecraft-free-unblocked_GM479516143.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_off000032e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E7 22312 bytes
SHA-256: d43b7e4e57f755b80795d2e597df9a4954c80fd8f8d5f1c71cf101cfe55d252e
font_01_sfnt_off0000648d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648D 19548 bytes
SHA-256: fcabc6e815b0657dd78a77d3eb8b578b7cbb19ca808d66a405b225628e12a538

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