Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0bf29de934d3a97…

MALICIOUS

PDF

35.6 KB Created: 2021-06-26 12:15:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5a2d63ef20a380d1316431f0b77e4980 SHA-1: a9cece52970e66718f8d07901599c75fc095b4ac SHA-256: c0bf29de934d3a974dccc88eb265c4118d41ca25e51fb078e52850598e327174
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/free-roblox-codes-game-hack PDF link annotation
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-survey-or-verification_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-roblox-promo_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/comment-wall-hack-sur-roblox-2021_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-roblox-tablet_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/how-to-hack-on-an-ipad-in-roblox_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/how-do-you-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/how-to-get-free-robux-in-a-second_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/how-to-make-pants-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/barren-roblox-hack_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/roblox-high-school-cheats-horor_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-roblox-without-buyin-anything_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/roblox-how-to-noclip-cheat-engine-feb-2021-mac-apple_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/descargar-hacks-para-roblox-pc_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/whatis-the-best-free-roblox-script-executer_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/roblox-2021-hack-banners_GM431946152.pdfIn PDF document text
    • https://willemvanromburgh.co.za/wp-content/uploads/fsqm-files/free-robux-generator-no-survey-human-verification_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
stream_002_off0000331c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x331C 22952 bytes
SHA-256: 2b1a1562c6cd8b4784f65553e873b610dbf790a2f55d8cb7530071a405fb97fc
font_01_sfnt_off000066d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D0 18824 bytes
SHA-256: 1a88528145c26efb1d07b3d490b3d5194077b7b06bf2b8f33c321d794e64caa0

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