Malicious PDF — malware analysis report

Static analysis result for SHA-256 0955fd476d101629…

MALICIOUS

PDF

40.2 KB Created: 2021-05-24 06:06:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5239dcae4e4a9ed4878f96f6f1abf350 SHA-1: 4ec81999ab1b8b183c7abc69f50ab1ee2a4f1fb5 SHA-256: 0955fd476d10162952556afafd4831ef65ef189033c711c8c3af53f8560893a2
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 0.8010

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/free-coin-master-spins-and-coins-game-hack PDF link annotation
    • http://cepobajodeva.com/images/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-robux-generator-no-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003259.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3259 28708 bytes
SHA-256: 09d3331767df910bae5137962d27def3f89f0f4cf52b3cc6b9452eac2e4e808f
font_01_sfnt_off0000728d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x728D 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007c3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3F 18060 bytes
SHA-256: 55f53c4f18bfaf59a8fbb6d381f980c96a3f4ad908aa3278e43a985984e68094

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