Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc240e778e17c8e…

MALICIOUS

PDF

185.8 KB Created: 2015-07-23 21:08:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e69e13a37f022e7dddbbb2136a2d5d76 SHA-1: c84f862f2bbb60dcd495916fd74f46216f1677f6 SHA-256: 6dc240e778e17c8e2a9893c5a75101f18188c45a49d0b954693790a28ba595a8
152 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's primary purpose is to lure the user to a potentially harmful website. Although no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an attempt to deliver a second-stage payload or conduct phishing. The ML classifier also flagged this PDF with high confidence.

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.
  • ClamAV: Pdf.Dropper.Agent-8787719-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8787719-0
  • 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%BF%D0%B5%D1%80%D0%B5%D0%B2%D0%BE%D0%B4%D0%BD%D0%BE%D0%B9+%D1%8D%D0%BA%D0%B7%D0%B0%D0%BC%D0%B5%D0%BD+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+5+%D0%BA%D0%BB%D0%B0%D1%81%D1%81&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184697_sims_4_skachat_torrent_bez_origin_mehaniki.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184324_happy_wheels_igrat_onlayn_besplatno_v_polnuyu_versiyu.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184421_obrazec_zayavleniya_na_uderzhanie_iz_zarabotnoy_platuy.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024230.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
pdf-font-stream PDF embedded font (sfnt) at offset 0x24230 3556 bytes
font_01_sfnt_off00024fb3.bin
e26bd10123ccce98f920c7bbf92c63e93afac75892b9376a851f4d0ebb27e2de
pdf-font-stream PDF embedded font (sfnt) at offset 0x24FB3 15264 bytes
font_02_sfnt_off00027e7f.bin
09873aaa51018758e04044d79f98d8fb4dc3244d114bd9b22b248b6cf2862072
pdf-font-stream PDF embedded font (sfnt) at offset 0x27E7F 14640 bytes
font_03_sfnt_off0002a9b3.bin
9533dfba099b61b29f9000956433d91bc45f81792a99d79a85b40514bb773fd5
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9B3 6836 bytes
font_04_sfnt_off0002bd72.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD72 6084 bytes
font_05_sfnt_off0002cd07.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD07 3752 bytes