Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a25d26c5aab464…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 04:00:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6dcbec902a16d59f81dadbf5bb71ff3c SHA-1: 938242f0718d92c02be4357f0db91fa0c5f0097d SHA-256: b0a25d26c5aab4647dea7ad5670a57d52ea84e1c3033131faddab30c64380f61
142 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, masquerading as free game hacks and generators. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a link farm designed to redirect users. The primary lure URL is https://netcdn.xyz/app/479516143/minecraft-java-free-download-game-hack, which likely leads to malicious content or phishing. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-java-free-download-game-hack PDF link annotation
    • https://www.kambati.co.za/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/spin-link_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/roblox-free-body_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • https://www.kambati.co.za/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/free-spin-coin-master-2021-link_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000496e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x496E 25076 bytes
SHA-256: 1370fe3d348aed900436a761ce585072ff33974cdea166e23df72784c33ba615
font_01_sfnt_off000081d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D4 18572 bytes
SHA-256: 84d994c9ca9b5ef406cb0cbd16402c282b50396e13120ada9f75f5d4c4d42292

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