Malicious PDF — malware analysis report

Static analysis result for SHA-256 40c29faab71fcdeb…

MALICIOUS

PDF

43.7 KB Created: 2021-05-14 01:00:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4ab4d44023d0f88567d47062b8ff831c SHA-1: 31c0b547beff1da19199123e31e894e0fb18de13 SHA-256: 40c29faab71fcdeb06e3a2c04627b71459c82bc660e4a183aca243551c524809
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a high-confidence machine learning detection for malicious PDFs. The document body and extracted URLs explicitly mention 'free Robux generator' and 'game hack' lures, indicating a social engineering tactic to trick users into visiting malicious sites. The presence of embedded URLs suggests an attempt to redirect users to potentially harmful content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/free-robux-generator-com-roblox-hack-game-hack PDF link annotation
    • http://alcomet.ru/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://alcomet.ru/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/master-game_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/how-to-get-free-robux-without-offers_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
stream_003_off00004973.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4973 26148 bytes
SHA-256: 81f9d39e68a8aeb339bb0cdfa46c924ea5866c1de55797ba55981b1c50578148
font_01_sfnt_off00008714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8714 18852 bytes
SHA-256: 4f913a2277500713712aa6cd09c4e12b5f8093088fb24eab89a43b1b22929045

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