Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b93aadfd51d894…

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 05:47:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 5a56f6f3ed36d282b928e9c0b0488c58 SHA-1: f1dc52676ffeed7b4ae62753618e42747638fce5 SHA-256: 65b93aadfd51d894c9c9bdd46782050ede13fda219c593c14f39650a5b93e58c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks and generators for popular games like Roblox and Coin Master. The document body and embedded URLs strongly suggest a phishing or scam attempt, aiming to redirect users to potentially harmful websites. The ML classifier also flagged this PDF as malicious with high confidence.

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/cheat-roblox-bad-business-game-hack In PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/114-hacks_GM479516143.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-clothe-goku-ui-free-roblox_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-hack-generator_GM431946152.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_off00002fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA5 22240 bytes
SHA-256: 76a3b28a055e2958cde0d235ff0b09babeb29a5d37481babd92d86d6e32a575f
font_01_sfnt_off000060e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 19192 bytes
SHA-256: be44361861f580ddfc172a15d05e0a95de4beda83519baec5adba1909ebf25d3

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