Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5a94ecf0a27448…

MALICIOUS

PDF

44.9 KB Created: 2021-05-11 06:35:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 58734a480a76b05cb9c57102fc19d8cd SHA-1: dac63fe7c6231b108502f0bdc1d8cfa87d4a8bc5 SHA-256: fa5a94ecf0a27448b11ad12ed2812389aed62116107ca81a283aa2b5c0b14447
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links that redirect to a website offering 'free generators' and 'game hacks', a common lure for malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URIs indicate a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/master-free-spin-and-coin-links-html-m-1-game-hack PDF link annotation
    • https://learnwmf.org/image/data/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/bloxpage-free-robux_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_003_off00004997.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4997 24456 bytes
SHA-256: 6d6301eb602a07e791b1c1d05ed23bdfbe4d9382d2e1ebbcce3e5d38570bd0bc
font_01_sfnt_off000081d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D2 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBD 18672 bytes
SHA-256: e8e5c78a3c75332e87dcced76b09371611da69ae485f860408bab2f18198baf8

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