Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb73b1799745f57a…

MALICIOUS

PDF

187.7 KB Created: 2015-07-24 20:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 31db1705bdf724ffe284990167d55c21 SHA-1: f01a206e8c6c131b210c96abfab7ff7446e85231 SHA-256: cb73b1799745f57a74523583b0104798d6bff09f633710c5de6e8cdb53559009
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector at botcraftman.ru. This indicates the document is likely part of a phishing or malware distribution campaign. No scripts were extracted, and the document body was not parsable, 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=%D0%BA%D0%BE%D0%B4+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B8+%D0%B4%D0%BB%D1%8F+%D0%BA%D0%B0%D1%81%D0%BF%D0%B5%D1%80%D1%81%D0%BA%D0%B8%D0%B9+%D0%B8%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82+%D1%81%D0%B5%D0%BA%D1%8C%D1%8E%D1%80%D0%B8%D1%82%D0%B8+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191054_verka_serdyuchka_vse_pesni_skachat_besplatno_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190519_skachat_maynkraft_152_s_modami_500_modov_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187047_rezultatuy_egye_po_russkomu_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000249c4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249C4 3556 bytes
font_01_sfnt_off00025747.bin
0cde7561afa5b2e75a3f23129ab2bb224f068d4c1baf13e5c5d33c908cb3ff6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25747 14524 bytes
font_02_sfnt_off000284af.bin
7acdfc50f13904e22b4543a151b75790d6e31ff78b7c307e371cb705a9d2f77e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x284AF 14640 bytes
font_03_sfnt_off0002afe5.bin
ef53a8d656234498f560d08a25b617d9f6e61b079f1b243246b6c61e82e73832		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AFE5 7256 bytes
font_04_sfnt_off0002c4f8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C4F8 6084 bytes
font_05_sfnt_off0002d48d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D48D 3752 bytes

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