Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ed334365f00f1a…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 08:05:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 955dab4f38b32cf2d350957a179751f6 SHA-1: c33d6d77485d9a2e4d1faa909bc7da10a1e0a8c6 SHA-256: 84ed334365f00f1af6152063b30258722be30f9652d8a0d7b8354f3f764f1535
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, designed to trick users into downloading further malicious content. The document body and embedded links strongly suggest a phishing campaign focused on game-related cheats and exploits. The presence of multiple redirector links indicates a deliberate effort to obscure the final malicious destination.

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/431946152/what-are-points-for-in-roblox-game-hack In PDF document text
    • http://mbbs.hr/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/hack-fool-roblox_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-20210-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/all-codes-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-card-codes-roblox-2021-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-op-boku-no-roblox-account_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-gratis-hack_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-fly-hack-2021_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-use-script-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-err-face-for-free-roblox_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
font_00_sfnt_off00003035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3035 22536 bytes
SHA-256: cca0d63ef0cc79e68cfd58c8c731333f3f93a62e728976fb7f2518d5de03de4a
font_01_sfnt_off000062b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 19392 bytes
SHA-256: 6ee4c6c2bc36e9485c1d8e6afcd62cc66d60928b15140094b1d26536a429f836

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