Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf6be025ddeff76e…

MALICIOUS

PDF

186.5 KB Created: 2015-08-05 17:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c2835a35a250d20a7864f6b434bc15bd SHA-1: 4ddd7869dec42b5bbae1f19f751666870951db1f SHA-256: bf6be025ddeff76ebcd2d6475d2a2c9e1b1c5cdcbd7746168b922460acf11b8b
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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%B4%D0%B0%D1%80%D1%8C%D1%8F+%D0%B4%D0%BE%D0%BD%D1%86%D0%BE%D0%B2%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%BD%D0%B8%D0%B3%D0%B8+%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/6//4304/4304455_pinkod_dlya_warface_2015_may.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305293_testuy_sabvufera_mp3_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305399_skachat_windows_8_bez_klyucha.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245c3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245C3 3556 bytes
font_01_sfnt_off00025346.bin
ac899cf29ba9a94ce557e180cc66c128d79617ec615bad1a4892c178c39fd911		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25346 14752 bytes
font_02_sfnt_off0002816a.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2816A 14468 bytes
font_03_sfnt_off0002ac1c.bin
7ae8f853b5d04975f87ccfd0c16e151ecb01b238446e82cd547fbb93feee156b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC1C 6924 bytes
font_04_sfnt_off0002c014.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C014 6084 bytes
font_05_sfnt_off0002cfa9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFA9 3752 bytes

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