Malicious PDF — malware analysis report

Static analysis result for SHA-256 91e43c63878278fb…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 05:30:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7972f8da2abf92ae2a6f6b084548ba12 SHA-1: da2f2f908c4e3c1fa640d20d1d9322c22f9c4844 SHA-256: 91e43c63878278fb4c9be55184e0701c011dbd14928942bb1ed5c4da2f83d635
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically designed to lure users into downloading potentially unwanted or malicious files related to game cheats and hacks. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to deceive users into executing further payloads.

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 http://netcdn.co/app/431946152/hack-roblox-free-builders-club-game-hack In PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/artmoney-pro-roblox-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-hack-roblox-jailbreak-on-computer_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-exploits-hack-one-piece-millennium-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/v3rmillion-robux-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/apps-that-can-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/speed-hack-roblox-ccv3-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-hacker-june-28_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/www-rbx-com_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-com-real_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_off00002fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE5 22292 bytes
SHA-256: d1e5300ec5d1a1dbb8cb7563eeda8728e5243b1cf4f765842dc70bfcf1227379
font_01_sfnt_off0000618a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618A 19256 bytes
SHA-256: efb6808810c46f9a6c7ae1ee7ac3878ff0fd4204ba45c782a6e039b78a789929

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