Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ed8142c0165879…

MALICIOUS

PDF

185.8 KB Created: 2015-07-24 23:11:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ea246c9564edcbbcdba39e93f1b8303a SHA-1: ca012103156a73c0c9e2bcd635ee0b4f04b8e1e7 SHA-256: f8ed8142c0165879f50295f17661ee3bda89a9972570d00fbd734d1cff9a2a5d
92 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious redirection. No scripts were extracted, and the document body was truncated and unreadable, limiting further analysis of the specific lure.

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%84%D0%BE%D1%82%D0%BE%D1%88%D0%BE%D0%BF+cs5+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185057_3_dnya_i_tuy_v_turizme_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195907_skachat_muzuyku_besplatno_korol_i_shut.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191764_skachat_bandicam_na_android_besplatno_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a861.bin
c8f5534be451ac8ac2c92a26b883f3c9c2f66c70bd76f0c063cb9bdd3bae67b5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A861 7232 bytes
font_00_sfnt_off000242a9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242A9 3556 bytes
font_01_sfnt_off0002502c.bin
45ddab74f6c09449f34a9d3cf0eb5ea07a2685693bd6693f53a9baaf82d5b8f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2502C 14488 bytes
font_02_sfnt_off00027d13.bin
0a35babd7e56f16d4111028a6a1825dfb38157d36e0887357813984338d29257		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D13 14700 bytes
font_04_sfnt_off0002bd8b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD8B 6084 bytes
font_05_sfnt_off0002cd20.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD20 3752 bytes

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