Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82e2e95af2c67ac…

MALICIOUS

PDF

47.6 KB Created: 2021-06-09 13:56:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e97c8a0f3fb3b5c0d653db9021feca9f SHA-1: 82752ddfe9b45e5c566b8aa7585c70f19a166b72 SHA-256: c82e2e95af2c67acc763a788920f14f245ececb009efa32457a0f71e20340f49
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links to known malicious redirectors, specifically promoting 'game hacks' and free items for popular games like Roblox and Coin Master. The document body itself contains obfuscated text and URLs, including the primary malicious redirector. The presence of embedded URLs and the nature of the lures strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/roblox-boys-pajamas-free-shipping-game-hack In PDF document text
    • http://brokermortgages.com/images/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/open-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/robux-hack-generator_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_off000050c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C6 24448 bytes
SHA-256: 723923c0f96048337679edd6cc12bb3ccf661d19b905ce281d13d751ab79a68e
font_01_sfnt_off00008902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8902 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00009312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9312 19708 bytes
SHA-256: f4b3853c5d51ceafbfb01239196ac38dc57b8c6dbcf79de09a1e376b21645150

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