Malicious PDF — malware analysis report

Static analysis result for SHA-256 9748156d0f2c9b38…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 13:21:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 11a9a6519414701d6d853ec2baaaca77 SHA-1: d027162b6406a4fd0116cc452c3b1fec85d4fa8c SHA-256: 9748156d0f2c9b387c0aca075a937db8d8817ac020eb489b4848627fafc9f896
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 0.9980

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 http://netcdn.tw/app/479516143/minecraft-java-edition-key-free-game-hack PDF link annotation
    • http://zagi.hr/files/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/all-roblox-gamepass-free_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/free-tiktok-emails_GM835599320.pdfIn PDF document text
    • https://www.zagi.hr/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • https://www.zagi.hr/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/comment-hacker-roblox-jailbreak-youtube_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/pokemon-go-free-10km-egg_GM1094591345.pdfIn PDF document text
    • https://www.zagi.hr/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://zagi.hr/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/roblox-hack-911_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/where-to-get-free-stuff-in-roblox_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/free-robux-without-any-verification_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
font_00_sfnt_off0000305c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305C 22500 bytes
SHA-256: bf1fed7dc5abef98a387fbe2fd13f33b98fe51892c9af6f08afc6eb848e3ce20
font_01_sfnt_off00006275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6275 18632 bytes
SHA-256: 793db133bcf07d4f4afd368b9080e48ab24207481f2b317929361f3eca0873b8