Malicious PDF — malware analysis report

Static analysis result for SHA-256 b507b4f215ff9d07…

MALICIOUS

PDF

186.3 KB Created: 2015-07-23 23:56:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6) First seen: 2020-09-24
MD5: b2e502cb3d0c3b997eff2a5e26ee852b SHA-1: 52a80fe1de0ccad320e40ad90c417c5a61920294 SHA-256: b507b4f215ff9d07b573c47881a08993fbf18f7b7ce02db5decceef5a2035f3d
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that advertises cracked software and redirects to known malicious infrastructure. The ML classifier also strongly indicated maliciousness. While no scripts were directly extracted, the PDF structure and embedded link suggest a lure to download potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=windows+xp+sp3+zver+2013+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+32+bit&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//4184/4184965_skachat_fiksiki_vse_serii_besplatno_cherez_torrent.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184614_alena_kravchenko_videoshkola_igruy_na_gitare_skachat_torrent.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184842_velikolepnuyy_vek_3_sezon_skachat_besplatno_cherez_torrent.pdfIn PDF document text
    • http://www.microsoft.com/typography/fonts/YouIn PDF document text
    • http://www.microsoft.com/typography/fonts/In PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a7c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A7C2 7940 bytes
SHA-256: 1c7ae93aed0595b9d76a6973fb11a1678b2bfebfd59a852ecef1b8290e6661d2
font_00_sfnt_off0002406f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2406F 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off00024df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24DF2 14508 bytes
SHA-256: a60e2a1c18fd07bab2d51e4410f41e70503cb666bef37248cf39c0f9ccc93fcf
font_02_sfnt_off00027b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27B73 14952 bytes
SHA-256: 0f7deb0720d0ce795a4ed63d684cfb10b518412d82a658c00a51f4bc6cc3b861
font_04_sfnt_off0002bf61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF61 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002cef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEF6 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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