Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5d524e0bc4d168…

MALICIOUS

PDF

188.3 KB Created: 2015-07-24 04:54:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 080db51f1f653faf869d3d0eb50f7693 SHA-1: ed75ec5dd6e8f87f12d6862062f0033a6515c808 SHA-256: ad5d524e0bc4d1681dbb4482300325cdc647058a82359afa5aeda0305c5a30d3
90 Risk Score

Malware Insights

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

The PDF file contains an embedded link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary malicious IOC is the redirector URL, which likely leads to further stages of infection. No scripts were extracted, limiting the analysis of specific behaviors.

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=Stalker+%D1%82%D0%B5%D0%BD%D1%8C+%D1%87%D0%B5%D1%80%D0%BD%D0%BE%D0%B1%D1%8B%D0%BB%D1%8F+%D0%BF%D0%BE%D0%B2%D0%B5%D0%BB%D0%B8%D1%82%D0%B5%D0%BB%D1%8C+%D0%B7%D0%BE%D0%BD%D1%8B+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185228_yandeks_bar_dlya_firefox_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185605_obrazec_akta_ob_unichtozhenii_pischevoy_produkcii.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187459_otvetuy_na_gia_po_russkomu_yazuyku_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a0a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A0A 3556 bytes
font_01_sfnt_off0002578d.bin
20e6e0416c2b3caa6649cdb4b86426ee06e680cdb75592ad8e9fcefbe5d52b90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2578D 14972 bytes
font_02_sfnt_off000285bb.bin
36eb82339ef2e3a592b3623f805c1f33aa8b379bd767270bf6b02e3a3535df06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x285BB 14792 bytes
font_03_sfnt_off0002b175.bin
e3ad3e7490a8e1a344149db473a9c13f5d1c02d49de0bba8d6fa32bb7993456f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B175 7536 bytes
font_04_sfnt_off0002c78f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C78F 6084 bytes
font_05_sfnt_off0002d724.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D724 3752 bytes

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