Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb8a7953bb38f55…

MALICIOUS

PDF

44.3 KB Created: 2021-05-13 21:00:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 59c8066c35ad091812d38da5bb97dcb7 SHA-1: 3bf47f97f4ed5310ac2826bfee8c15349b1ea60a SHA-256: ccb8a7953bb38f55e2c7f032e53a0bb682f6e66c53cd9af2f2929e5b3b2412f3
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as offers for game hacks and currency. The document body and embedded URLs strongly suggest a lure to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/give-free-robux-game-hack In PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.iainpekalongan.ac.id/opac/repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48CB 25528 bytes
SHA-256: bad7be4ab2e7728787f8ed903a4b97a77b0c1e06ca9b351c66871220233d7a92
font_01_sfnt_off000080c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C2 2880 bytes
SHA-256: 106de1d187d148d03f5c34a802444a7e62d93662ddf359d17cd55770c6c16081
font_02_sfnt_off00008ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB3 18248 bytes
SHA-256: ea59f1cb8b041c2b832a039673c57edae81c360e33a5bea04888abdf43ec1c43

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