Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbbb8ce2f87976fb…

MALICIOUS

PDF

185.1 KB Created: 2015-07-23 21:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2821b5589e5c2f480a8d84358f25df14 SHA-1: 71709cc3ce76b262e339d7330af4c891ceaafd50 SHA-256: fbbb8ce2f87976fb427ad686c41b664452809b2153ed5bc579def34da3a6b574
92 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 primary IOC is the malicious URL, which is likely used to deliver a secondary payload or redirect to a phishing site. No scripts were extracted, limiting further analysis of the execution chain.

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=%D0%BC%D0%B5%D1%80%D1%81%D0%B8%D0%B1%D0%BE+%D0%B8%D0%B3%D1%80%D1%8B+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184682_new_roundup_4_teacher_s_book_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184592_primeruy_dlya_yesse_po_obschestvoznaniyu.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184791_skachat_chit_na_varfeys_na_aim.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002420b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2420B 3556 bytes
font_01_sfnt_off00024f8e.bin
37945cd6d2a162cd4b04bf2f8e5b75bc894b845fadff796b00718ea8e49ff7c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F8E 14608 bytes
font_02_sfnt_off00027cf8.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CF8 14468 bytes
font_03_sfnt_off0002a7aa.bin
a15bc9c1168ddb15c7cc7b2b5ad97411ae1ddfb2b0c98c6f18f84e4814fa58ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7AA 6612 bytes
font_04_sfnt_off0002ba81.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA81 6084 bytes
font_05_sfnt_off0002ca16.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA16 3752 bytes

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