Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1a81ba2179af379…

MALICIOUS

PDF

44.2 KB Created: 2021-06-13 20:03:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 66bedfca2fe05f48acd8c6f1dff1d2ee SHA-1: 1f357fb95b32bae428c9955489ff8f1784385862 SHA-256: d1a81ba2179af379df64b06ec1429c669cc9b8b1c748d0e7b737c335035a59d9
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 0.9648

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/hoe-to-get-free-robux-2021-game-hack PDF link annotation
    • http://io24.com.ar/images/get-me-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/ex7-roblox-free_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/pokemon-go-free-trade-evolution_GM1094591345.pdfIn PDF document text
    • http://io24.com.ar/images/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-cheat-in-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-bad-buisness-hack_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-hack-roblox-flood-escape-2-no-mega_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-hack-the-plaza-roblox_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-booga-booga-mojo-hack_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-hack-ghost_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/hack-the-game-coin-master_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4836 24108 bytes
SHA-256: b53a70d71408ce4a9bc82ffd5ac493c649b09d5085732aa7d33c30e717ce8853
font_01_sfnt_off00007f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2E 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off0000892b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x892B 18520 bytes
SHA-256: b9c7d078766d18681e749e9c2ca795fa258be998a7d01a4751ae77e658227651

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