Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d26eceff4ad6608…

MALICIOUS

PDF

39.6 KB Created: 2021-05-20 14:15:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 60349a579c6bc25a6040997b39391311 SHA-1: c120ef77d6e4163d27b72667daa063cb8cc7b449 SHA-256: 4d26eceff4ad6608fb82056716d44afb42c889061f0ac6be15ad546ccad78ad1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and generators, directing users to external URLs. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful websites. No scripts were extracted, but the document body and heuristics strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8068

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/431946152/free-roblox-card-game-hack PDF link annotation
    • http://zercalo.org/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/pubg-90-uc_GM1330123889.pdfIn PDF document text
    • http://zercalo.org/images/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-hack-no-verification-no-signup_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000360b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x360B 24784 bytes
SHA-256: 85bb74eb33563ac916bb1e452b90236be9b5af41c7530bf36024d2a8648b39b6
font_01_sfnt_off00006f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7F 2820 bytes
SHA-256: d88f25cfe237a714f996150a11dd8a058f0f7c3e9d1ae91c17b46c10409b6c0b
font_02_sfnt_off00007919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7919 18348 bytes
SHA-256: 112d0d0d53092b330ca0b2276e93dcc27866393801cc1956065b4b485469ba66

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