Malicious PDF — malware analysis report

Static analysis result for SHA-256 c713dd13c18a9b2f…

MALICIOUS

PDF

364.2 KB Created: 2015-11-15 20:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: e5b6076c0a24089e2adc4f2e06120cc2 SHA-1: b689d6d9357a7e3a602dddc264d7160a71416668 SHA-256: c713dd13c18a9b2fc6c4de169e4c80c8c060e27346c55132752d9fdda98a3733
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains an embedded URI pointing to a suspicious domain, which was flagged by heuristics. The document body, though heavily obfuscated, appears to contain metadata related to a product manual search. This suggests a social engineering attempt to trick the user into visiting the malicious URL, likely to download further malware or conduct a phishing attack. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://taurus-tg.ru/?nnr&keyword=Daewoo+dwf-5590dp+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F&charset=utf-8 PDF link annotation
    • http://media.nn.ru/data/ufiles/2015-11/07/8d/a1/5647f50a0e49b_samodelnyesamoletychertezhi.pdfIn PDF document text
    • http://media.nn.ru/data/ufiles/2015-11/ec/40/ca/5648b23db483f_skachatmoddiplomatiiadliamountbladewarband1158.pdfIn PDF document text
    • http://media.nn.ru/data/ufiles/2015-11/e1/cb/c8/5648a554dcb39_advertappnakompiuterskachat.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005626c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5626C 9156 bytes
SHA-256: c3efbb1eb474c49f99c0a9258278584a80b0032148ec7961a79eba74308755e0
font_01_sfnt_off00057ca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57CA5 17512 bytes
SHA-256: a30bea911736e33669c7292bd6da777a3b4f4478fd469ef0873c5d1c1196285a

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