Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf354c19abb80823…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 23:16:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b90a8cf3eacf955291a251e93ec52e10 SHA-1: c04cdef478c21f6581e2e736b57039f5c3d80e6d SHA-256: cf354c19abb8082366385307a9bc5540357263775619c71538452ed8d1e38043
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-robux-not-clickbait-works-proof-game-hack PDF link annotation
    • http://www.sbairs.com/datas/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-roblox-bee-swarm-codes_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-tiktok-followers-com_GM835599320.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/will-roblox-be-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/robux-prices_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/robux-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-followers-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/robux-hack-2021-download_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-usernames-and-passwords-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-robloxloob_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/tiktok-free-vs-premium_GM835599320.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/robux-sites_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_off000030b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B2 22208 bytes
SHA-256: 796d017ea659b075382d3b2e535907a5721cd868e2f23c7386985d24b53f32c2
font_01_sfnt_off0000622b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622B 19536 bytes
SHA-256: b737dbe8c52d4e0069f9a130bb26094a2c09008bec3655f7913988213a88f1f1

Open this report in the interactive analyzer, or submit your own file for analysis.