Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f950e66746b62d1…

MALICIOUS

PDF

42.9 KB Created: 2021-05-16 11:52:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c6ed6641c92e8871b3e2d8a399993e55 SHA-1: 5350e1ea49b5c7d226bccb94217d64f201685ed9 SHA-256: 9f950e66746b62d1a6012745e96e93206cc56c03064d92d94a152c1e4e992975
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free items to entice users. It contains multiple links pointing to known malicious redirector infrastructure, specifically the URL https://netcdn.xyz/app/406889139/free-spins-and-coins-coin-master-2021-game-hack. The document's structure and embedded links suggest an attempt to redirect users to potentially harmful websites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/406889139/free-spins-and-coins-coin-master-2021-game-hack In PDF document text
    • http://fmbompastor.com.br/images/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/robux-survey_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/robux-gratis_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/mcpe-116_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-robux-fast_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_off00004a73.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A73 25564 bytes
SHA-256: 31e7d5abb357f9b694f2cc99abf19bbc67f1e6d94e92d27e02284e194e1f2d5e
font_01_sfnt_off000084ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84CE 18460 bytes
SHA-256: 9f443343d33dd80abfdfffa9dfb60a36fd2beaa647f06f075f3e145f27f8847c

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