Malicious PDF — malware analysis report

Static analysis result for SHA-256 c141096ae7dc4f96…

MALICIOUS

PDF

187.8 KB Created: 2015-07-25 19:59:01 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6) First seen: 2020-12-25
MD5: 1b633615af336002255c6f2ddf2f609e SHA-1: 44f57b9efd38192f11225fdf44e76d2c7bc6f15c SHA-256: c141096ae7dc4f9670eeb63176b6ec948cb29d5871037fc66e6472dcf58bfe61
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious infrastructure. The embedded URL `http://botcraftman.ru/...` is identified as a redirector, suggesting the document's primary purpose is to lure users to a harmful destination. No scripts were extracted, but the presence of a malicious link is sufficient evidence of a phishing or malware distribution attempt.

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%9F%D0%B8%D1%88%D0%B5%D0%BC+%D0%B2%D0%BC%D0%B5%D1%81%D1%82%D0%B5+%D1%81+%D0%BB%D0%BE%D0%B3%D0%BE%D0%BF%D0%B5%D0%B4%D0%BE%D0%BC+%D0%BA%D0%BE%D1%81%D0%B8%D0%BD%D0%BE%D0%B2%D0%B0+%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 In PDF document text
    • http://fastpic.ru/In PDF document text
    • http://www.liveinternet.ru/clickIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/5//4202/4202592_avr_studio_5_uchebnik.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/5//4207/4207381_golaya_mama_pri_detyah_foto.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184554_sims_3_polnaya_antologiya_19_v_1_skachat_torrent_besplatno.pdfIn PDF document text
    • http://www.microsoft.com/typography/fonts/In PDF document text
    • http://www.microsoft.com/typography/fonts/YouIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024ab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24AB2 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off00025835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25835 14884 bytes
SHA-256: 7b2429e31aad71d19dcccaa0b5d7c6be3e96fc477f5bc4b24b8de69ebf94b0aa
font_02_sfnt_off00028728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28728 14520 bytes
SHA-256: c521cb7f32363069232cb6cf023e13d81dfc7f2346484feaa89f0b3c8cd570ff
font_03_sfnt_off0002b1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1FA 6748 bytes
SHA-256: 8e87418016affecac1a8c4671d6429ef385ae138f2afd0ba980beced75da52bd
font_04_sfnt_off0002c554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C554 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002d4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4E9 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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