Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a03628a8745903c…

MALICIOUS

PDF

43.7 KB Created: 2021-05-12 03:37:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4c624556aa9a83e13b69b2be54fccd2c SHA-1: 6c00da548fec51db63a3eb7be1458a2f4f7bee07 SHA-256: 0a03628a8745903c9360e9b27776310fe8a30f8783258bf2319a0ced6f3bad99
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 0.9969

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 https://netcdn.xyz/app/431946152/free-robux-generator-2021-game-hack PDF link annotation
    • http://tcarh.com/images/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://tcarh.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://tcarh.com/images/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://tcarh.com/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://tcarh.com/images/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://tcarh.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://tcarh.com/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://tcarh.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://tcarh.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://tcarh.com/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://tcarh.com/images/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://tcarh.com/images/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://tcarh.com/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://tcarh.com/images/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://tcarh.com/images/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://tcarh.com/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://tcarh.com/images/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
    • http://tcarh.com/images/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://tcarh.com/images/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://tcarh.com/images/roblox-re_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
stream_003_off00004823.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4823 28052 bytes
SHA-256: e6765a3ede919436cb8fab318d158bfa6dd280a1d54750e5178538d21f642a79
font_01_sfnt_off000086c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C4 18748 bytes
SHA-256: fca1806ffff7593a0a2d811b077fe14576afb362c0c2e8ffc695fbf8edc3964d

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