Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d189a4c4e8ef32…

MALICIOUS

PDF

185.9 KB Created: 2015-07-24 13:13:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e5dc7ab6564f7765833ee5524c20180c SHA-1: 7b7c5f6099f76ac3ce5fa4d04e38afa36610a58c SHA-256: d6d189a4c4e8ef328dd09ebdc5749ebdc67256916292ef63417953beb4ece702
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The primary IOC is the malicious URL, which is likely used to deliver a secondary payload or redirect the user to a phishing site. No scripts were extracted from this sample.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+%D0%B4%D0%BB%D1%8F+%D0%BD%D0%B0%D0%BA%D1%80%D1%83%D1%82%D0%BA%D0%B8+%D0%BC%D0%BE%D0%BD%D0%B5%D1%82+%D0%B2+%D0%B8%D0%B3%D1%80%D0%B5+7+%D0%BD%D0%B5%D0%B1%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184659_skachat_igru_zuma_2_besplatno_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184706_skachat_durak_na_razdevanie_na_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184782_programma_kruzhka_v_dou_po_matematike.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002442c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2442C 3556 bytes
font_01_sfnt_off000251af.bin
c8a66d7be3fb3fb041f037f779330613c992e37eafca891481aad406cedfc91c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251AF 14292 bytes
font_02_sfnt_off00027ea6.bin
61d14ba452ff6e0dc179888c2f398a787bbab14a9cc52f92372d80655ecc5ef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27EA6 14512 bytes
font_03_sfnt_off0002a989.bin
12f14b63b9bd1d1dc3c663bc0be0f28dc77bbd72f9f8609117d7788744ab24eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A989 7016 bytes
font_04_sfnt_off0002bdf5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDF5 6084 bytes
font_05_sfnt_off0002cd8a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD8A 3752 bytes

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