Malicious PDF — malware analysis report

Static analysis result for SHA-256 97847651e57dc16a…

MALICIOUS

PDF

184.9 KB Created: 2015-08-08 11:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6) First seen: 2021-08-20
MD5: 3f697f9b2590eb0c5f6def1671c216f3 SHA-1: 4aa65e557d66537cb92dd29e3c1985f52d738631 SHA-256: 97847651e57dc16abdc03ca8192ce54b385b6394e63f8ef7f71ec94935db9c0a
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document is designed to redirect users to a potentially harmful website, likely for phishing or to download further malware. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7625832-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7625832-0
  • 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.
  • 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%82%D0%BE%D1%87%D0%BA%D0%B0+%D0%B4%D0%BE%D1%81%D1%82%D1%83%D0%BF%D0%B0+%D1%81+%D0%BD%D0%BE%D1%83%D1%82%D0%B1%D1%83%D0%BA%D0%B0+windows+7&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//4386/4386999_skachat_stalker_zov_pripyati_sigerius_mod_22_torrent.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383712_forma_088_u_06_skachat.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384770_goluye_aduygeyki.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_off0002a623.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A623 6796 bytes
SHA-256: 04b2b280a3ec1e99521f05726e0b65d2eefe5e3a9dfd515badac89faea34fbf1
font_00_sfnt_off00023fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23FD7 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off00024d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24D5A 14496 bytes
SHA-256: bf6055d69769ad39250ea75d53fbd3dfaa20a6810b0369c0351577f3541ae720
font_02_sfnt_off00027b03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27B03 14584 bytes
SHA-256: 9d90e18ee50434addfa8c210065a1461feda93b1cad23cebf91f15991c29ade2
font_04_sfnt_off0002b9b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9B2 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002c947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C947 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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