Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0544f2c115e30d9…

MALICIOUS

PDF

33.6 KB Created: 2020-08-11 23:01:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b55acc4b476408998699ccc1c08b02a6 SHA-1: 0cb2576b8c975bb3a61a1e2bd3997f3cc1569a60 SHA-256: d0544f2c115e30d9ff95f1b859b12c0f9b999b062ffb9db94ba5b8f79858becb
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. The primary link, https://ttraff.ru/pify?keyword=mathematical+models+of+communication+channel+pdf, is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure.

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=mathematical+models+of+communication+channel+pdf In PDF document text
    • http://files.campus-house.com/uploads/1/3/1/4/131483391/finuk_xatepebumotuz.pdfIn PDF document text
    • http://xeparunid.cdri.org/uploads/1/3/0/8/130814085/1174581.pdfIn PDF document text
    • http://files.dawnmariemacsporran.com/uploads/1/3/1/3/131380305/lunelowalop-wuvutizewevudag.pdfIn PDF document text
    • http://soxuwik.jimkeddyconsulting.com/uploads/1/3/2/6/132681824/1fbe6c3da0a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2821/files/jojafogomoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8154/7428/files/68623180974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/28515374036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0911/3240/files/16894766436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8060/6111/files/32337286268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1055/5041/files/tabel_nutrisi_hidroponik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8741/0840/files/industrial_ergonomics_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/pugoxifutul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6689/2191/files/namisezawuwinosexot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/sonoxoloka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/dudelife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3105/0915/files/adventures_in_middle_earth_loremasters_guide.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 2

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_off000048e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48E0 5304 bytes
SHA-256: 17feda5e5b23fe4fb3c2606e02087b73a0efba12073dc0d1cfd02be6cad327b7
font_01_sfnt_off00005ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD1 8900 bytes
SHA-256: 0e304be2a3c167d975aad0dd566c1a0fe739145ac78491b4fa307b0e6e83bd0a

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