Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e8ed35be574f596…

MALICIOUS

PDF

187.3 KB Created: 2015-08-08 09:36:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6) First seen: 2020-09-24
MD5: b2f626addbfce2ff4d64f81064dd2d5a SHA-1: 9186636bf96e6060589c98f8f6aa71e86639bc72 SHA-256: 4e8ed35be574f596845dba277832f7585fa71377cacca969c23e94e74da4cca4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a link to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious link suggest it is designed to lure users to a compromised site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-8786937-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8786937-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B5%D0%B3%D0%B5%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B8+%D0%B8%D0%B3%D1%80%D1%8B+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8 In PDF document text
    • http://fastpic.ru/In PDF document text
    • http://www.liveinternet.ru/clickIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383726_yemulyator_androida_na_pk_skachat_besplatno.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384038_kalendarnuyy_plan_kruzhok_po_legkoy_atletike_2013.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383909_skachat_na_telefon_govoryaschego_kota.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_off00024905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24905 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off00025688.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25688 14692 bytes
SHA-256: 022231481b6a6aacec3b8417edf3ec50baedc100156fbd838a171c0523457e19
font_02_sfnt_off000284a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x284A1 14468 bytes
SHA-256: c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd
font_03_sfnt_off0002af53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF53 6912 bytes
SHA-256: af9fa848333164331248da585b74d8ccaa6c338dfda1d2c9cf7058c8abcef121
font_04_sfnt_off0002c343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C343 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002d2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2D8 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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