Malicious PDF — malware analysis report

Static analysis result for SHA-256 975a2167c8811558…

MALICIOUS

PDF

187.1 KB Created: 2015-07-23 20:07:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ab639d56ece77a0dde6e7db455a9eca5 SHA-1: f2e055804ab39cd138aa040f875a7f43336d249b SHA-256: 975a2167c88115581349703c71af934fa5f4e7d1ee7ba904a137bb3a9dffe54d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirects. No scripts were extracted, but the presence of the malicious link strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 2

  • 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=%D0%B3%D0%BE%D0%B4%D0%BE%D0%B2%D0%B0%D1%8F+%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%BE%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D0%B0+%D0%BF%D0%BE+%D0%B1%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D0%B8+8+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D1%81+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D0%B0%D0%BC%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183194_kursovoy_proekt_po_vodosnabzheniyu.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183247_antenna_fuksa_shema_i_opisanie.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183246_model_idef0_primer.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000247b9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247B9 3556 bytes
font_01_sfnt_off0002553c.bin
05e8295952c0bcbc08df7c011a994cce09cdc03664500e0735cc4d6b5a14a1b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2553C 14780 bytes
font_02_sfnt_off00028398.bin
d52a48a751b8b1b7ee0e66091b0bcd71be61d5495dec22afc44e3b443be247e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28398 14468 bytes
font_03_sfnt_off0002ae4b.bin
080453198874361dc9cfb039208c9c3b6b7dc205af3ee36d744bf7ce0558e62f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE4B 7040 bytes
font_04_sfnt_off0002c2b0.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2B0 6084 bytes
font_05_sfnt_off0002d245.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D245 3752 bytes

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