Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4138320749cac9…

MALICIOUS

PDF

40.6 KB Created: 2020-08-19 07:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea9af8f16974af28f4f66bce5ed9d227 SHA-1: 205c85f576df227de7a36b41529b898bd640d726 SHA-256: 2b4138320749cac9c22047a59fd0f09c598a9c2c2618565e3e052d1b8fa4f5f2
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a graduation party invitation template. This link leads to a link farm hosted on ttraff.ru, which is flagged as malicious. The document body and embedded links suggest a social engineering lure to drive traffic to potentially malicious or unwanted content. 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=college+graduation+party+invitation+templates In PDF document text
    • http://gunumux.catholiccemeteriesoshkosh.org/uploads/1/3/2/7/132711973/pawavumekodo-levinik.pdfIn PDF document text
    • http://files.douglascountygajrotc.com/uploads/1/3/2/3/132303009/bf0d5821318.pdfIn PDF document text
    • http://files.my-luxe-boutique-4you.com/uploads/1/3/1/4/131409693/7744942.pdfIn PDF document text
    • http://files.helenflockhart.com/uploads/1/3/1/6/131636845/jusanexu.pdfIn PDF document text
    • http://files.revoltiao.co/uploads/1/3/2/6/132695543/9665466.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/1/0432/9108/2918/files/whirlpool_wrx735sdbm00_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2321/9363/files/vibolenakukubavekepadux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7473/files/majevusalegulujemumutito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8914/0643/files/76335409648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70934180934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/xofujibopimunukig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijufetibumumupaxewaromuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/69059962073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4295/5676/files/31806024883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8072/6168/files/wings_of_fire_book_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/82679787669.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6119 5344 bytes
SHA-256: d73e81ef914ffb3d1aa57ba50fc88aa6a6791e9f486d54693eeb05f4ccd44399
font_01_sfnt_off0000733b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x733B 10060 bytes
SHA-256: bd9b07e11c6fedfe37638d704b39861dd665b80fdb7daa8a10d7cd766dc4fe58

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