Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2267b4a43bca089…

MALICIOUS

PDF

185.6 KB Created: 2015-07-23 13:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2020-07-24
MD5: ee499743707f3f366657f36c8314b691 SHA-1: 2408641843a15890b52c55a2fd45d770d19bffe7 SHA-256: c2267b4a43bca089af5b294ddb33d73bced5dbd41ef384b0bf9175b23d747070
74 Risk Score

Malware Insights

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

The ML classifier strongly indicated maliciousness in this PDF. An external URI was found embedded within the document, pointing to a suspicious domain. This suggests the document's primary purpose is to redirect the user to a potentially harmful website, likely for phishing or malware distribution. No scripts were extracted, limiting further analysis of the attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://ruqvarq.ru/?b1Ls&keyword=%D0%BF%D1%80%D0%BE%D0%B5%D0%BA%D1%82+%D0%BF%D0%BE+%D1%84%D0%B8%D0%B7%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B9+%D0%BA%D1%83%D0%BB%D1%8C%D1%82%D1%83%D1%80%D0%B5&charset=utf-8 PDF link annotation
    • http://fastpic.ru/In PDF document text
    • http://www.liveinternet.ru/clickIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183178_kuryatnik_proekt.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183246_model_idef0_primer.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183186_kursovoy_proekt_po_arhitekture_obschestvennoe_zdanie.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_off00024522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24522 3556 bytes
SHA-256: 880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
font_01_sfnt_off000252a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x252A5 14040 bytes
SHA-256: 4f1b73c0b0d17ab12421775ce783e2ae8d5c3deb4654a7830a663cfcfbe750d4
font_02_sfnt_off00027f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27F1B 14532 bytes
SHA-256: 117923cdac600716b79efc7976b13891b188858df3d676e8ecf29640d6595adf
font_03_sfnt_off0002aa09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA09 6532 bytes
SHA-256: e6a2486c5f94eda322fbf78a49a2a6ad8b007920c05d77eca37253680bd82cdd
font_04_sfnt_off0002bc99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC99 6084 bytes
SHA-256: 819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
font_05_sfnt_off0002cc2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC2E 3752 bytes
SHA-256: 9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e

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