Malicious PDF — malware analysis report

Static analysis result for SHA-256 c77f6d1cc821c951…

MALICIOUS

PDF

46.5 KB Created: 2021-05-19 13:11:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c4b40fb95b0e9f0c86547f896f54eef6 SHA-1: 0993080e59fc6fd289658f4d807cd02e7b13faff SHA-256: c77f6d1cc821c951f037e19f2e6838acf91068e62485245a91a6f0a6b14f7443
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that lure users with promises of free Robux and game cheats, indicating a phishing or scam attempt. The presence of external URIs and the ML classifier's high confidence score suggest malicious intent, likely to redirect users to a site that hosts further malicious content or exploits. No scripts were extracted, but the document's structure and embedded URLs point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/best-way-to-get-free-robux-game-hack PDF link annotation
    • https://www.manmed.info:443/images/_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/master-game_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/wurst-minecraft_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/pokemon-go-free-7km-eggs-august-2021_GM1094591345.pdfIn PDF document text
    • https://www.manmed.info:443/images/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/actual-free-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B4 25448 bytes
SHA-256: fec8f929732e326f3e406e3d4387f75a124297f4c9b07cd635d9343bd984f368
font_01_sfnt_off0000848f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x848F 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000091a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A0 18724 bytes
SHA-256: 0e67c697191027b8b448214b8413bf6f3ed0ff1165507b95d6a34aabcad7a82f

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