Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd012892bc1381b9…

MALICIOUS

PDF

33.6 KB Created: 2021-07-20 08:30:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 56bc18ef68545280438f63499a00664f SHA-1: e301784e175a4b559a4e7f0c508b810e048740d1 SHA-256: bd012892bc1381b9d9d15c3b3b2407a73b4f4b117b239b351ce827f076f03769
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to external websites, including one identified as a 'free generator / game hack' lure. This suggests the document is designed to trick users into visiting these sites, likely to download malware or engage in phishing. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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.tw/app/835599320/free-likes-for-tiktok-game-hack PDF link annotation
    • http://hilro.co.za/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/play-minecraft-online-free_GM479516143.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
stream_002_off00002e97.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E97 23512 bytes
SHA-256: 6b7e684e6eff9203dfae8124b036d004e9ba59b64ddd62db506f24fa927b7b5f
font_01_sfnt_off000063c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C1 17456 bytes
SHA-256: 308920fe04ba02bee84e9df39862d70534e91875b9399095fdfb0b81d81483e5

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