Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8ceacfe1cefb9a0…

MALICIOUS

PDF

185.2 KB Created: 2015-08-08 09:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6) First seen: 2020-12-25
MD5: 6c3accc0cfb2437324b27250a9a0fd34 SHA-1: 4c6f2ce60bbdcd22319e26a91bdc1f98f3dcffce SHA-256: e8ceacfe1cefb9a0a9b810df5150c84f2e9f25625d1bb168df3087084e306a87
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The primary IOC is the malicious URL, which is likely used to lure the user to a compromised site or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • 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.
  • 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://botcraftman.ru/?lip&keyword=%D0%BD%D0%B5%D0%B4%D0%BE%D1%81%D1%82%D0%B0%D1%82%D0%BA%D0%B8+%D0%B2+%D1%80%D0%B5%D0%B7%D1%8E%D0%BC%D0%B5+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D1%80%D1%8B&charset=utf-8 In PDF document text
    • http://fastpic.ru/In PDF document text
    • http://www.liveinternet.ru/clickIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/5//4226/4226849_microsoft_word_skachat_besplatno.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384264_portfolio_fizinstruktora_v_detskom_sadu.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384030_proshivka_modema_e1550.pdfIn PDF document text
    • http://www.microsoft.com/typography/fonts/In PDF document text
    • http://www.microsoft.com/typography/fonts/YouIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x241C5 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off00024f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24F48 14576 bytes
SHA-256: dbce002c6cb5c31493ff784a25cb82508d6924abe69d024667fa5edf8626b35d
font_02_sfnt_off00027d2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27D2D 14468 bytes
SHA-256: 8e32ff1379540e767311e690d76ea5942e880804014815a6a8cbb765680ff596
font_03_sfnt_off0002a7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7DB 6672 bytes
SHA-256: 2611765606f013f29712e9e8902d8b8db2e89ab2e03ac4510fd2a4b0acbfa559
font_04_sfnt_off0002baeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAEB 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002ca80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA80 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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