Malicious PDF — malware analysis report

Static analysis result for SHA-256 165e839abe91efa4…

MALICIOUS

PDF

183.0 KB Created: 2015-07-23 21:11:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b0ee1a9b4234bcefe482d9fddc31e183 SHA-1: d03c1f467f425e64487d55e51401efbf014bf072 SHA-256: 165e839abe91efa475a65376010bd370e17b20aad18b13a3377eda3e5e9cbd6c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document's purpose appears to be luring the user to the malicious domain, likely for phishing or to download further malicious content.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+x22+%D0%B4%D0%BB%D1%8F+css+v34&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184554_sims_3_polnaya_antologiya_19_v_1_skachat_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184735_koduy_na_skayrim_5_na_arbalet.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184333_krossvord_po_fizike_na_temu_magnitnoe_pole_s_otvetami.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off00029f60.bin
e1ed043d99e4ffa145ada17f3b8e985f6cdf3743b11cbc9eb0f2c92a15121842		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29F60 6592 bytes
font_00_sfnt_off000239bd.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x239BD 3556 bytes
font_01_sfnt_off00024740.bin
5cd4e9caa40419031f64f74b4bd102f15cc2b2e854db0a75446ba0627dd96436		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24740 14312 bytes
font_02_sfnt_off0002744d.bin
4a736de95c2332cf9819883931788b602db33916e2a68792185131121d7f6d66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2744D 14584 bytes
font_04_sfnt_off0002b258.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B258 6084 bytes
font_05_sfnt_off0002c1ed.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1ED 3752 bytes

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