Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a49055825bf924f…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 00:38:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a6c85c0dba6acc018d877d1246fee169 SHA-1: 39a62092999fc93e3c145f66c8b590ef40bae3d3 SHA-256: 3a49055825bf924f06b17b4b3a63738a85eca6006df6ff0d18bbb20afca6fb4d
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 0.9980

Heuristics 5

  • 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.
  • 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 http://netcdn.tw/app/406889139/coin-master-card-collection-link-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-give-away-everyone-will-get-robux-proof_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/pubg-uc-transfer_GM1330123889.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-coden_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-do-you-make-a-shirt-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-promo-codes-2021-november_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-any-roblox-account-using-windows-command-prompt_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-free-robux-download-pc_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-item-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/code-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-alts-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-finish-obby-no-password_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/trolling-outfits-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/scam-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32E8 22996 bytes
SHA-256: 87d8d293471b8fea1981f2bca72915de6b9d2948c7d547d57d214cad60fcf2bf
font_01_sfnt_off000066cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CD 18252 bytes
SHA-256: ffcdde65fbc11ac4564943f1b7ab4cc8ae2466c0ddb41cd48a89f042d41a65fb

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