Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a22952337c6f65a…

MALICIOUS

PDF

43.8 KB Created: 2021-05-14 19:00:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6c314a82843cd51acbe6f74a03cce820 SHA-1: 98094a01536d190267d70e235c0208b6f63638dd SHA-256: 4a22952337c6f65acd20048e283579b6b3c6d067699e1afa0ccc3836137ca4ce
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 0.9648

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/479516143/how-to-host-a-minecraft-server-for-free-game-hack PDF link annotation
    • http://dobrovodie.ru/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://dobrovodie.ru/images/www-robux-us_GM431946152.pdfIn PDF document text
    • http://dobrovodie.ru/images/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://dobrovodie.ru/images/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://dobrovodie.ru/images/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://dobrovodie.ru/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dobrovodie.ru/images/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://dobrovodie.ru/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://dobrovodie.ru/images/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://dobrovodie.ru/images/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://dobrovodie.ru/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://dobrovodie.ru/images/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://dobrovodie.ru/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://dobrovodie.ru/images/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://dobrovodie.ru/images/blox-best-robux_GM431946152.pdfIn PDF document text
    • http://dobrovodie.ru/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://dobrovodie.ru/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://dobrovodie.ru/images/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dobrovodie.ru/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://dobrovodie.ru/images/minecraft-classic-free_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000489a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x489A 24272 bytes
SHA-256: ab57cbaf3414d3e7b19dafe70e59baab4b47d84503a4e8bb3494937fd6c75ca7
font_01_sfnt_off00007f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8B 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off00008975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8975 17988 bytes
SHA-256: 552c8aaf5f0bf5f0c44469b5bd19d93c548c2f36967da1a6f1157fed71bc8ec1

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