Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2146253d4a61b3…

MALICIOUS

PDF

43.4 KB Created: 2021-05-19 12:26:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 398190866550cba710d6db5cd3d42d74 SHA-1: 9dee928b987deeb7cb8ae37664f91f64c1cc40eb SHA-256: 9e2146253d4a61b3e7ec9b1d343d8140a53c738e058f5b8aa513d5c35713d497
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free Robux, directing users to a suspicious URL. The presence of multiple links to game-related PDFs on 'kontaktadig.se' suggests a campaign focused on tricking users into downloading potentially malicious files. The ML classifier also strongly indicated maliciousness.

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/roblox-promo-code-to-get-free-robux-game-hack PDF link annotation
    • http://kontaktadig.se/images/master-game_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://kontaktadig.se/images/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • http://kontaktadig.se/images/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • http://kontaktadig.se/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/free-roblox-wings_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kontaktadig.se/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://kontaktadig.se/images/funbloxxyz-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_003_off000049f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F0 26312 bytes
SHA-256: 1dec49eae530371af38a8205bb2159c395c6f8988cf7a7659d90a9c61540cfde
font_01_sfnt_off000085da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DA 18780 bytes
SHA-256: 57e6eef1fbc3af66d8c5b48d94799429ebee4b6256a60c8d2844d61f1a05fc0c

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