Malicious PDF — malware analysis report

Static analysis result for SHA-256 f90501176f0b4d93…

MALICIOUS

PDF

37.6 KB Created: 2021-05-25 08:31:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6ef3e36517899175f56b2e06c6e7b61d SHA-1: a5e6004b3da70b261a74f1510b92bf9b29452da4 SHA-256: f90501176f0b4d9373ea677e535695605ffb208604d410b22c76d36baeaf8b23
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 0.9447

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 https://netcdn.xyz/app/479516143/minecraft-name-tag-hacks-game-hack PDF link annotation
    • http://bepquannhu.vn/upload/editor/files/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://youtuIn 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_off0000367f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x367F 26168 bytes
SHA-256: 84a2b794970224d18a371be51951c09a0f952625b7d1a9bb48485daf2c8479cc
font_01_sfnt_off0000720d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x720D 18288 bytes
SHA-256: eb7ed4260d6d64c3cd9f3242d6af3157cea31df7eff6e4be90ec8e6c005c47d1

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