Malicious PDF — malware analysis report

Static analysis result for SHA-256 3034aee2c8ab3d83…

MALICIOUS

PDF

44.9 KB Created: 2020-08-10 00:19:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c8e6a6987be4008b5247605e6dd2ca94 SHA-1: 58769b3d24e5d19614e80fa3991503edea8e6de2 SHA-256: 3034aee2c8ab3d83576d8696dc3d87f9a64774715f2544bbb1e30993a3276a7e
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.ru/pify?keyword=histologi+arteri+pdf', is identified as a known malicious redirector. This suggests the document is part of a link farm designed to lure users to malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://ttraff.ru/pify?keyword=histologi+arteri+pdf In PDF document text
    • http://files.20thlondon.com/uploads/1/3/1/3/131398095/4de26d6.pdfIn PDF document text
    • http://puzanijo.theoutstandingguides.com/uploads/1/3/0/7/130776031/c84c3d9.pdfIn PDF document text
    • http://files.emilyrbarratt.co.uk/uploads/1/3/1/4/131453944/a4e7ed7509af5.pdfIn PDF document text
    • http://zofed.elynyd.com/uploads/1/3/2/7/132740494/b6e2c5f7.pdfIn PDF document text
    • http://files.rockdogltd.com/uploads/1/3/0/8/130813546/fadutinan-kopizerexi-likep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/loduxozubafami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9653/7243/files/swashbuckler_5e_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/75974322228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/resume_templates_open_office.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/90057166562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9973/2634/files/84487779714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/56046750146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/15474300949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0144/4512/files/feranenikubavafedafufuxel.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6595 4852 bytes
SHA-256: 4731516ac98411cfeaf23895a099fe4228f40cb583365cf7033c9d76a7b3d955
font_01_sfnt_off00007629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7629 10244 bytes
SHA-256: 7b7d7ca8f768e39889ffe7d2e68874034f347693367f6b221e925a4bde5045cd
font_02_sfnt_off0000992c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x992C 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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