Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d95a04e64929c1…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 19:31:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6903a1fecad3998da11104d2cecf9976 SHA-1: 9cb5ea88797f2097ab66f5e7f21a0eda8283092e SHA-256: d7d95a04e64929c1226c23419c77d878baa86d3e125ab194ab810b2e7218380a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to 'netcdn.tw', which is flagged as a lure for game hacks. The document body, though partially corrupted, contains text related to 'Coin Master' and 'free spins', reinforcing the lure. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to malicious sites for potential credential harvesting or malware download.

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/406889139/daily-free-spins-on-coin-master-game-hack PDF link annotation
    • http://elib.upiyptk.ac.id/opac/repository/roblox-gamepass-hack-script_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/anti-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-accounts-2021-september_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-free-robux-no-human-survey_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/what-games-to-play-on-roblox-to-get-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000321c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x321C 22676 bytes
SHA-256: 344279f9b6d64bf447a1d33ec2ccd60a51ce11303d78e3c517609c8dcefbd727
font_01_sfnt_off00006505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6505 18596 bytes
SHA-256: aa492e242eac48f7948a24bc45da02f981899f459ecbb02c793d9ace75e48389

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