Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a79799c57e47411…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 11:03:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7814c5770fdeb52299205b6ad9a9d813 SHA-1: 6af3934d3458ab9cb69d30b8f50c6d6c8c5f571b SHA-256: 3a79799c57e47411b02c111375299d6495dd170837ff556257020582bc238acf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and text referencing game hacks and free currency for popular games like Coin Master and Roblox. The primary link, http://netcdn.tw/app/406889139/http-bitly-coin-master-free-2021-spins-game-hack, is identified as a lure for game hacks. While no scripts were explicitly extracted, the presence of embedded URLs and the 'ML_NYX_PDF_MALICIOUS' heuristic strongly suggest malicious intent, likely to redirect users to exploit kits or phishing pages.

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/http-bitly-coin-master-free-2021-spins-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/roblox-hack-tool-game-android_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/howe-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-glitch-through-walls-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-las-vegas-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-making-hacker-smilator_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-generator-2021-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-cheat-sheet_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacks-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-buy-free-robux-for-money_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_off00003225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3225 22208 bytes
SHA-256: cdd49b44e1652ae1e75dc1a0ae38444fc367545e2f641a80211c509988b1973f
font_01_sfnt_off00006371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6371 19048 bytes
SHA-256: 01084bfe53d443b8da5cf981609595d67e5fc3d3bdce2ec71c80f4ab3330f563

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