Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ced77b68a0b8501…

MALICIOUS

PDF

186.7 KB Created: 2015-08-08 09:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ce328223156c5cfaae7aad48a467f2ec SHA-1: 7e53d936341b1b1bc68ca7d39bf134c6a0dd21a1 SHA-256: 5ced77b68a0b8501601c0315ec4730c112275db38c811f7a72e0cb95cc506e47
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a malicious site. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a dropper. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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-8762632-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8762632-0
  • 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%BC%D1%83%D0%BB%D1%8C%D1%82%D1%84%D0%B8%D0%BB%D1%8C%D0%BC%D1%8B+%D0%B2+%D1%84%D0%BE%D1%80%D0%BC%D0%B0%D1%82%D0%B5+amv+%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://img1.liveinternet.ru/images/attach/c/6//4383/4383749_divinity_2the_dragon_knight_sagav_14965_treyner.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384032_shkola_milicii_v_krasnodare_chto_sdaetsya.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384369_akt_priema_peredachi_obrazec.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_off00024457.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24457 3556 bytes
font_01_sfnt_off000251da.bin
738e14fdf7304644cfb9d67213f87ce60e572611117e2e97cd9f646ea65f769c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251DA 15004 bytes
font_02_sfnt_off00027ff7.bin
b91d4650368049d04dc8aa461a9af7074d23513186c13ade0e7ab6412d3c52b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FF7 14684 bytes
font_03_sfnt_off0002ab50.bin
5cf593c78522c44c1c7b88e875dcdf91aeb606aeedd46edcadbe60428abde50a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB50 7348 bytes
font_04_sfnt_off0002c0da.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0DA 6084 bytes
font_05_sfnt_off0002d06f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D06F 3752 bytes

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