Malicious PDF — malware analysis report

Static analysis result for SHA-256 7efe641024d549da…

MALICIOUS

PDF

36.9 KB Created: 2021-07-04 02:23:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 0f52b2f0f4e464e6933e76a76e3d57ab SHA-1: d2e88baa0dde33c40a34a644685583b87c15ca39 SHA-256: 7efe641024d549da229982a090e734a01f1090d391db69520b0872203efe9d04
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The ML classifier strongly flagged this PDF as malicious, and the embedded URLs are indicative of a phishing or scam attempt to lure users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs are sufficient to infer a malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/406889139/coin-master-free-coins--spins-game-hack In PDF document text
    • http://suaedy-library.net/repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-hacker-1x1x1x1_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-free-headphones_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-red-shirt-in-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-with-inspect-element-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-monster-parts-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/cheat-codes-for-roblox-skywars-how-do-u-get-costumes_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/pants-free-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-como-hackear-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_off000039bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39BB 23288 bytes
SHA-256: 70693bd107b5ac65e37e9d1cdb497c9a362cb04e8a5556d48cba11f57b6ca272
font_01_sfnt_off00006e19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E19 18176 bytes
SHA-256: c90cd52c690b3b1dd04b69356ad4f8db221968fb130a3d2ff71dcd50323a1a90

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