Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef5dff88b6e8a0c…

MALICIOUS

PDF

186.4 KB Created: 2015-07-24 12:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a30f31301cbf37b2716c93bdfc82cf62 SHA-1: 5348a8141855c3deff894ff8e839cf55e26c5d71 SHA-256: 6ef5dff88b6e8a0cbcd7e9e4c6e2ac00b0f24a9c8473a97daca0ee688f18ea50
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is highly suspicious and likely leads to a phishing or malware distribution site. No scripts were extracted, but the presence of a malicious link is sufficient to classify this as a phishing attempt.

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%9A%D1%83%D0%BC%D0%BF%D1%8F%D0%BA+%D0%B6%D0%B5%D0%BB%D0%B5%D0%B7%D0%BE%D0%B1%D0%B5%D1%82%D0%BE%D0%BD%D0%BD%D1%8B%D0%B5+%D0%BA%D0%BE%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189262_tatyana_polyakova_vse_knigi_skachat_besplatno_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191198_simulyator_zombi_virusa_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192231_zemelnoe_pravo_uchebnik_2015.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_off000244d4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244D4 3556 bytes
font_01_sfnt_off00025257.bin
bb5b802854ea1a24f63a3dcc236427076b198ab20604c7a11531778a49920144		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25257 14560 bytes
font_02_sfnt_off00028005.bin
fbe4af72ea4b6832e02f3a94d39805fe74296d1f62d5d4f3c350b4dd983b7d89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28005 14468 bytes
font_03_sfnt_off0002aab3.bin
dced5bdf011da87ba9e45cbebcc8cb804133ef766d49d25a68c522c1ec78ebc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAB3 7320 bytes
font_04_sfnt_off0002bffd.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFFD 6084 bytes
font_05_sfnt_off0002cf92.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF92 3752 bytes

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