Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9ba26c71514b5d7…

MALICIOUS

PDF

53.5 KB Created: 2021-06-04 05:00:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 50c5591f23245cdf6f359b1b03b0d75c SHA-1: 17ce8a9e41bad29f35330ca99711f58abc615e3d SHA-256: f9ba26c71514b5d711d918a5524e6a4c3019a95f8333fd380ed04e1548aca00d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector, which is a common lure for malicious content. The document body, though heavily obfuscated, contains text related to 'free game hack' and a URL pointing to such content. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9616

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.online/app/431946152/how-to-make-a-private-server-on-roblox-for-free-game-hack PDF link annotation
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/www-robux-redeem_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000547c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x547C 32160 bytes
SHA-256: 0f8767886f88c909da84bdd938dddc0a43bd3fcf69b609cb27e03e9bdcf2c5cd
font_01_sfnt_off00009f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F5B 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000ac6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC6D 19196 bytes
SHA-256: b86313febfc454b426d55667776bc2f57fbcac051d8b12890de5d5336413d825

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