Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ddea9b811e833f…

MALICIOUS

PDF

36.9 KB Created: 2021-05-21 17:31:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 93356b99010e6d6c212e22b31a64514a SHA-1: 24c88fda90946c938bfcf61534028102ea066382 SHA-256: 15ddea9b811e833ff99281942d429eb386529e936d716f3303f6d57dbc221ab1
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 0.9447

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/free-minecraft-skins-xbox-one-game-hack PDF link annotation
    • http://onlinemusicsolutions.com.au/images/coin-master-free-spain_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off000034d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34D8 25236 bytes
SHA-256: f24ec8e8db8f6b2e5581dfbdcd0a037a7aa4651a710cd4661c060b88ed334380
font_01_sfnt_off00006e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6B 18476 bytes
SHA-256: 232ed5a85e3eb7365037632e89adcc3de647f06670efb3a8119b1009e47d113e

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