Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cbb901d3e4621e8…

MALICIOUS

PDF

184.9 KB Created: 2015-08-05 14:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6) First seen: 2026-06-05
MD5: 59e57b54e6a017fefb08c4613479b993 SHA-1: e1340b8cef499b20232102b7a563e2badf9ac7e7 SHA-256: 4cbb901d3e4621e870a892f3a2975e8c9d928239be6dc52dc90844b538da2c68
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, botcraftman.ru. This suggests the document is designed to lure users to a malicious website, likely for phishing or to download further malware. The ML classifier also strongly indicated maliciousness.

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=%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%D0%B4%D0%BB%D1%8F+%D1%82%D0%B5%D0%BB%D0%B5%D0%B2%D0%B8%D0%B7%D0%BE%D1%80%D0%B0&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/6//4304/4304759_kak_nauchitsya_pisat_diktantuy_po_russkomu_yazuyku.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305143_detskaya_poliklinika_na_tokareva_raspisanie.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305202_skachat_mafiya_1_russkie_mashinuy_cherez_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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x241DE 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off00024f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24F61 14540 bytes
SHA-256: 407a34cb10622e403fbe82b1ab20dddcbb01c585296958f6e013d87f432894b2
font_02_sfnt_off00027d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27D09 14468 bytes
SHA-256: dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac
font_03_sfnt_off0002a7bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7BC 6352 bytes
SHA-256: 62b40d700c141ec448bfb82dfccac6d42ecb1eddc3b3f5364effb10e3a54723e
font_04_sfnt_off0002b9bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9BC 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002c951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C951 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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