Malicious PDF — malware analysis report

Static analysis result for SHA-256 64ab883e652ca6fb…

MALICIOUS

PDF

33.8 KB Created: 2021-06-17 21:10:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b3397cf609e98bd35dd15c2c97b4f5ab SHA-1: 96f85c8dc03d160105c8f3cbca440c266a94e3d1 SHA-256: 64ab883e652ca6fbc66448935d5b24dac5c8bb126bb01a22462a69685d7fafea
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links and text referencing 'free Robux' and game hacks, strongly suggesting a lure for phishing or malware distribution. The primary URL, http://netcdn.co/app/431946152/codes-to-get-free-robux-on-roblox-game-hack, is directly associated with a 'free generator / game hack' redirector. The presence of a visual download button lure and callback phishing lure further supports a malicious intent to trick the user into downloading a payload or engaging with a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/codes-to-get-free-robux-on-roblox-game-hack PDF link annotation
    • http://library.atim.ac.id/repository/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-roblox-accounts-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-gabe_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/original-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-someone-easy-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robux-hack-no-human-verification-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-fly-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-generator-no-human-verification_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_off00002e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E34 22276 bytes
SHA-256: 998caa695dd5156e6038793981309291367e3f04f4de96abb1eaedc38d768dd9
font_01_sfnt_off00005f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9D 18884 bytes
SHA-256: 0e49371f0bccee6ce57eb3be036f793356e77d9a0703384220f77f5bc0dd5b16

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