Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f1ee89dbefbb6f…

MALICIOUS

PDF

33.9 KB Created: 2021-06-19 05:53:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 52c5d81e57a90026ac419606f683c44f SHA-1: 3985ea2d1ce3e631d9f583f6a448f6d362bcd480 SHA-256: 84f1ee89dbefbb6f4e0ab7a393a3091624c88abce20ad1ad220cec43af356741
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to websites offering 'game hacks' and 'free generators', a common lure for malicious downloads. The ML classifier strongly indicated maliciousness, and the presence of numerous embedded URLs associated with such lures supports a high confidence assessment. No scripts were extracted, but the document's structure and embedded URLs point to a phishing or malware distribution attempt.

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.co/app/431946152/games-that-really-give-you-free-robux-game-hack In PDF document text
    • http://sbm-nn.ru/images/roblox-hack-bars_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/hack-roblox-generator-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/the-plaza-roblox-money-cheat_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-mobile-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/troll-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robuxs-free_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/admin-roblox-free-download_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_off00002ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCB 22040 bytes
SHA-256: 1f3732ed0673ff5a677f9beecca5b7d7cfdae6e0f7788a8b4789ebcb7c82aa79
font_01_sfnt_off00005da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA3 19708 bytes
SHA-256: facade205b0af7ee536e4bcc9997771c8c77b1ee6f795c37dba11161539d727b

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