Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c04ea84246a05d…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 02:33:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 192701da79d325a95aa29364993da1d0 SHA-1: dea0b4c05a56f55b48d7eb5445e1d0012c3b21fc SHA-256: c7c04ea84246a05d54a666dbc3277f5fc5303af4d54a0ca0da1e1c6f2560c22e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document employs a common lure of 'free Robux' or game hacks to entice users. It contains multiple embedded URLs, with the primary one being http://netcdn.tw/app/431946152/free-robux-no-verification-no-download-game-hack, which likely leads to a malicious site or a phishing page. The ML classifier strongly indicated maliciousness, and the heuristics confirm the use of a redirector lure.

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/431946152/free-robux-no-verification-no-download-game-hack PDF link annotation
    • http://library.persadabunda.ac.id/repository/robux-hack-pro-tv_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/robux-kostenlos-ohne-handynummer-kein-hack_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-hack-an-account-roblox_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-and-builder-club-claims_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-free-robux-no-scam-november_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-20210-robux-cheat_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/cheats-for-doengeon-quest-in-roblox_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
font_00_sfnt_off00003040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3040 22420 bytes
SHA-256: 1f3ca660857552ecef3a3345e4bac74683aaef657cacf1086f90548a3d7f57c6
font_01_sfnt_off0000625d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625D 19652 bytes
SHA-256: 8dba42de70404ddf4ce7a70a40047468e67895e17bebeb66015d1708da090460

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