Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eba8edd842cbe07…

MALICIOUS

PDF

47.0 KB Created: 2020-07-30 02:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a18b1832cf89f1a7aef6fdf8afecc983 SHA-1: 86b473d517ffff33a66f941e28845ea0afe6bf25 SHA-256: 2eba8edd842cbe070be0cbb2b0136acea57560c6625f4ef8467bf8cc21752fc0
194 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to what appears to be a link farm designed for SEO manipulation. One of the primary links directs to a known malicious redirector. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDF documents from web content, further supporting the link-based attack vector.

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.com/pify?keyword=lipid+profile+presentation+pdf In PDF document text
    • http://files.almostsponsored.com/uploads/1/3/1/6/131637043/7163544.pdfIn PDF document text
    • http://files.cookbuilderssupply.com/uploads/1/3/0/8/130813923/8880bc7b4.pdfIn PDF document text
    • http://files.tworiversrecovery.com/uploads/1/3/2/7/132740860/91cf8adff.pdfIn PDF document text
    • http://files.calallenfootball.com/uploads/1/3/0/7/130739093/e7f2a4927176f98.pdfIn PDF document text
    • http://files.carycalhoundesigns.com/uploads/1/3/0/7/130776088/dodolu.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/1/0431/0417/4233/files/gitixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9992/1315/files/nolukale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2806/2103/files/kosifoforepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/9039736813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/26062625088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/91648085670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8656/0936/files/wefedabedigikuvejaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3747/2421/files/69246539221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/97798700340.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 8

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_off000072a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A2 4764 bytes
SHA-256: 4b3694c6baffa2cd577f8d5459049fb77cf4c2f7d0418bda93a614862aaaa52f
font_01_sfnt_off000082d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D1 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00008b5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5E 10364 bytes
SHA-256: 0aca4f338a7a2669f0161db6498f905150e89c21c5f1f9be7a36cec5891f3c5d

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