Malicious PDF — malware analysis report

Static analysis result for SHA-256 7929218d0c112749…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 04:15:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1dc3275988fe48bd1d5a14ca26574e34 SHA-1: 8d186a5d47fc59273f43b6569d0ecdfc8a0e931a SHA-256: 7929218d0c1127497155455371f658b3965d429cc189e02574e5fde7cb9a119a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, disguised as game hacks and generators. The primary lure is a link to 'free-spins-for-coin-master-without-human-verification-game-hack' which points to a known malicious redirector. This indicates a phishing or scam attempt designed to lead users to potentially harmful websites.

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/free-spins-for-coin-master-without-human-verification-game-hack In PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/how-to-ban-people-in-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/roblox-how-to-get-free-robux-on-ipad-2021_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/free-robux-generator-unlimited-robux-and-tix_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/roblox-jailbreak-hack-noclip-zip-file_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/roblox-face-png-free_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/why-do-robux-hacks-ask-for-verification_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/download-free-robux-hack-for-free_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/how-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://www.pspmrsmbpulau.com/opac/repository/how-to-get-your-hacked-roblox-account-back-with-coding_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/roblox-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/hack-robux-survey_GM431946152.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/robux-hack-2021-hack_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pspmrsmbpulau.com/opac/repository/how-to-traversed-wall-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/minecraft-hack-client-download_GM479516143.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
font_00_sfnt_off0000324f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324F 22780 bytes
SHA-256: b72ce1e802fc8e956c7df714007ee44bdbddd166104577d0da16da13b32e4883
font_01_sfnt_off0000656d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656D 19072 bytes
SHA-256: ab456d8fb78f7a75ac8c0c3e18ca03385b605ca6326ff6a6876da9d238efa35b

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