Malicious PDF — malware analysis report

Static analysis result for SHA-256 5525721826c7376f…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 15:17:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0c58b1c440dc4f2850d8263a10e9eed1 SHA-1: 2b0541fafd99a0a4784ffc275d4f59389e913f0d SHA-256: 5525721826c7376f60126518cc4cf29689fdcd0328c68676982e08c61b632e53
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks, specifically for Coin Master and Roblox. The primary link, http://netcdn.tw/app/406889139/ac-market-coin-master-hack-game-hack, is flagged as a redirector lure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for malware download or credential harvesting.

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/406889139/ac-market-coin-master-hack-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-free-hack-download_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/robux-hack-pastebin-explication_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/pubg-uc-price-list_GM1330123889.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/como-romper-las-paredes-en-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/download-minecraft-free-hiapphere_GM479516143.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
stream_002_off000033fa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33FA 22728 bytes
SHA-256: d37cf8788a4e34fea458fa3ecf467a908327cbd7f7300fd9ad2856aa957752c3
font_01_sfnt_off000066d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D9 18004 bytes
SHA-256: 51c403ccbf2095c129d261ca0667a18c16ab70be1117906c570f2d9d1feb2da9

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