PDF static analysis report

Static analysis result for SHA-256 87cd21aa9dc2b7a0…

SUSPICIOUS

PDF

40.5 KB Created: 2021-05-11 02:34:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 49b36c33347855dec786d377b1e05865 SHA-1: e31e0bf3b212643b8232a1dd1b40ab7cf6e315ab SHA-256: 87cd21aa9dc2b7a0a9d549ad05df60a51e9e9688c2b4234b8709c1929ab0e3fb
52 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as suspicious. 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 clean score 0.0128

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/406889139/coin-master-hack-apk-download-2021-game-hack PDF link annotation
    • 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_003_off000034a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34A5 26564 bytes
SHA-256: 8be79e69ee9899b21d20f361d6652bf4fcc1744c50e61f85c65ea76ce3dc1e67
font_01_sfnt_off0000710c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710C 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off00007aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAC 18876 bytes
SHA-256: d185c6cd3e49a2afee7ee12c234f8f1d1893ea96722679c453b335d0786e87d0

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