Malicious PDF — malware analysis report

Static analysis result for SHA-256 1515c74035083b0e…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 16:11:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dea1c2b6d8e05e0bb257e3049de6ad29 SHA-1: fb011cc172217699bb69e1156c19899fd725d9ec SHA-256: 1515c74035083b0e1e3186138bf27121e2637c08a45e00cf1c5123e3a2d2cfcb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically for Coin Master. The embedded URL and document body text reinforce this lure. While no scripts were extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or scam attempt, likely leading to a malicious download or a credential harvesting page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-free-coins-and-spins-link-game-hack PDF link annotation
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-homepage_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-daily-spins_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_004_off00005074.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5074 24076 bytes
SHA-256: 240e7263242314e70d407ef71305160bf38baff68f00f61cc4c09f92c0c2568c
font_01_sfnt_off00008758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8758 18228 bytes
SHA-256: b9853edf503a53d442d3b577c09c09d59d7c57f52c57bf669c9991918f7be207

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