Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4a3f549805beaa3…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 13:10:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1313d686af9438039f516a70a35613d4 SHA-1: 22476aeafc03c3cb65741298f0413e1ba057105f SHA-256: a4a3f549805beaa307b5089db55c0311723f63643902a1c0d16435fee935b48f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9980

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.co/app/431946152/how-to-get-free-robux-on-ipad-mini-2021-game-hack PDF link annotation
    • https://www.jjpremiers.com/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/easy-robux-free-today_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://jjpremiers.com/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-instant-hack_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/free-robux-hack-xbox-one_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-app_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED6 22412 bytes
SHA-256: 777313b96392da2b1ce7c79f20a03d56a9eb6f582182776e2389bdcc6f296a47
font_01_sfnt_off000060a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A1 20052 bytes
SHA-256: b6f5618a84c0a9580acff7472f2e67c43a2b97765ca2078068d7f59032b1bc49

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