Malicious PDF — malware analysis report

Static analysis result for SHA-256 77c90b4854cafc92…

MALICIOUS

PDF

41.6 KB Created: 2021-05-21 09:34:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6fce984ea8a400d848d69242191d732d SHA-1: 30c9b401911fca1d99bf15fed61518f2f351d0d4 SHA-256: 77c90b4854cafc92f6f47854fef4d62415548c8d5475ea5eb461097a85e2d9fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting "free generators" for games like Coin Master. The document body also contains a "CLICK HERE TO ACCESS COIN MASTER GENERATOR" call to action. These elements strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7589

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 https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-link-facebook-game-hack In PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/free-tiktok-followers-no-survey-or-verification_GM835599320.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-game_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
stream_002_off000034ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34AC 24484 bytes
SHA-256: 83f01ec46235a349c2b6210920401f8da956a8856e860c3f42ff1547859469eb
font_01_sfnt_off00006b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8F 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off00008019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8019 18636 bytes
SHA-256: 50d107b0548bd3d005e8b5e4f9cf847a43b3082c8a2089b5591d39299d79db66

Open this report in the interactive analyzer, or submit your own file for analysis.