Malicious PDF — malware analysis report

Static analysis result for SHA-256 1336f7fcf91fc705…

MALICIOUS

PDF

185.3 KB Created: 2015-07-24 05:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 005c6fc7a4713268dd82040fa5b29dfa SHA-1: 6c175112a3317c7746d16c326ece1aff8c8eb8bd SHA-256: 1336f7fcf91fc705bc386a203a98d7e28e858c53d8e2d6b820370ebb7f423826
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious due to an embedded link pointing to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL likely serves as a lure to a phishing or malware distribution site, aligning with common spearphishing attachment tactics. No scripts were extracted, but the presence of a malicious link is a high-confidence indicator.

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%8D%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE%D0%BD%D0%BD%D0%B0%D1%8F+%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0+excel+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185916_skachat_igru_garis_mod_14_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185293_1s_zarplata_i_upravlenie_personalom_82_skachat_besplatno_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188257_sergeev_soldatuy_armageddona_2.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_off000241b6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241B6 3556 bytes
font_01_sfnt_off00024f39.bin
6f12970e7f3443bab3410283ec03214a2985ea063010d4a98220fe4d8948c35c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F39 14108 bytes
font_02_sfnt_off00027ba8.bin
3f510ec70055ea0eebb13a16f668d548552f07b978981b6c4a395a54b93f98cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BA8 14760 bytes
font_03_sfnt_off0002a74b.bin
34557931512c1695c896f0f59dd3c6e26310fe53e222014a23878010850b3b21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A74B 6996 bytes
font_04_sfnt_off0002bb94.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB94 6084 bytes
font_05_sfnt_off0002cb29.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB29 3752 bytes

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