Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6d84a83d047203b…

MALICIOUS

PDF

35.9 KB Created: 2021-07-04 02:33:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: be047e003d6d2b176274d98f35147d73 SHA-1: ca967cb1a65f9974860e97be6db194eaeae936a3 SHA-256: a6d84a83d047203b9e6db9cb14762d31897d99a913405f44bcdb1b4abe895638
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to a redirector service, masquerading as a 'game hack' or 'free spins' generator. This lure is designed to trick users into clicking through to potentially malicious websites. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-daily-free-spins-link-today-2021-game-hack In PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/proto-smasger-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/no-human-verification-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/are-roblox-hack-clients-real_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-roblox-accounts-made-50-days-old_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/can-i-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/hack-game-toool-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/roblox-vehicle-simulator-money-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/how-to-hack-gta-car-game-on-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/robux-giver_GM431946152.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/robux-free-online_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_off00003592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3592 22116 bytes
SHA-256: efd1136e50a4a8ba30433fcf3f2074621532ff2642e64b2f7956fae3d818b159
font_01_sfnt_off0000665f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665F 19344 bytes
SHA-256: bda18ad7bc028b2989dfdc10c84b9c87c1dbf0242a88a3a6fbf9217f203e509c

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