Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a3be70c4647f73b…

MALICIOUS

PDF

185.8 KB Created: 2015-07-24 11:48:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b780379d7eb9f9ca8a1e6d74a8b59303 SHA-1: 01e50fea91b03c15d2b2b5780e4b01201351178c SHA-256: 7a3be70c4647f73bb2d980ca055afc92eee2401e311fb2337ce484f79885eb0b
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 linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirector activity. No scripts were extracted, but the primary attack vector appears to be the malicious link within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+subway+surfers+rio+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188200_dogovor_kupliprodazhi_transportnogo_sredstva_blank_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191868_doncova_lunatik_ischezaet_v_polnoch_skachat_besplatno_fb2.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188570_skachat_film_zharkoe_leto_v_kabule_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a7ef.bin
27b1037178c3c9ddd0159a3414e159ea874851ab534883ec2ecfd6e4ce5fdb9f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A7EF 7348 bytes
font_00_sfnt_off0002413a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2413A 3556 bytes
font_01_sfnt_off00024ebd.bin
7363bb16832fc61fa5065b8bf03699492f92b69d0a920ba461dbcb01688dcb6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24EBD 14644 bytes
font_02_sfnt_off00027c4c.bin
a788e732f3b357b5d58aa63f292c88831d954f72f02e8f4492be65506b314bb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C4C 14768 bytes
font_04_sfnt_off0002bd6f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD6F 6084 bytes
font_05_sfnt_off0002cd04.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD04 3752 bytes

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