Malicious PDF — malware analysis report

Static analysis result for SHA-256 de22141b8c0fec66…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 21:54:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a6534f1a51f0d2b62a1079bdf8a0fd6d SHA-1: 86b5a144ceb295d22835415376a4d68943f05e0b SHA-256: de22141b8c0fec66f53504b63678d48d153e7856687ef86ec8d1863f52ff0997
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.tw/app/431946152/jailbreak-roblox-hack-game-hack PDF link annotation
    • http://lib.unar.ac.id//repository/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-spin_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/how-to-get-free-stuff-on-roblox-games_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/bleach-primera-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/how-to-get-a-lot-of-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4A 22296 bytes
SHA-256: 2060620e266343ec84f49a81d710f0a50416820ab24270187a4b80e437d39ac3
font_01_sfnt_off00005ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFE 18944 bytes
SHA-256: b440c48c3f289b909ed34f2eee2f3b6fc5dac76bbfa3721c7bf6b2977e88f8db

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