Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0811707abcae3ba…

MALICIOUS

PDF

185.9 KB Created: 2015-07-24 13:08:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6) First seen: 2026-06-05
MD5: 85e501b2dfa93d8145b9d8973be1eefa SHA-1: acad0314d7c6e9da4684bb1522e0233a860abb6f SHA-256: b0811707abcae3baff3c3df80a94e5a6eb05117712006c1442dc1d3845beb1f8
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary malicious IOC is the redirector URL, which is likely used to host phishing content or distribute further malware.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+%D0%B2%D0%BE%D1%80%D0%B4+2003&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//4190/4190736_diktantuy_po_russkomu_yazuyku_2_klass_skachat.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191869_page_hack_mn_skachat.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192103_ohotniki_za_mezhdunarodnoy_nedvizhimostyu_torrent.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_off000243f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x243F6 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off00025179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25179 14968 bytes
SHA-256: 80091df9f8ba96c9b77b5fbd74baf5fd9ddc087c0afa24770b59ded938c80988
font_02_sfnt_off00027fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27FD2 14468 bytes
SHA-256: c0d5ba9d7e8c22c4fe2bd478f9e1bfd406166d70b5caa7d8b2c8f94fd3697abe
font_03_sfnt_off0002aa7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA7D 6668 bytes
SHA-256: 263c6dece6b678624d0f3f52cc3f14d86c014c2092ed948580189f5fdcf7241f
font_04_sfnt_off0002bdb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDB3 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002cd48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD48 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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