Malicious PDF — malware analysis report

Static analysis result for SHA-256 23ea28a548c394f0…

MALICIOUS

PDF

43.6 KB Created: 2020-08-13 04:00:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e5bc4f4628d47cefd57a5e15c63e46e SHA-1: e1385712cd750886f9fe4576f8c1fcdde46eaba0 SHA-256: 23ea28a548c394f091c5488434f9851727e35223bc7cddeb06867b1cc994971e
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=theological+dictionary+old+testament+pdf', suggesting the document is designed to redirect users to malicious content. The document body itself contains garbled text along with the same suspicious URL, further reinforcing the malicious intent.

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.cc/pify?keyword=theological+dictionary+old+testament+pdf In PDF document text
    • http://files.bannisterrunning.com/uploads/1/3/0/8/130874026/7915608.pdfIn PDF document text
    • http://files.professorpricklethorn.com/uploads/1/3/0/7/130775897/bezinazidix-mubunom.pdfIn PDF document text
    • http://files.hipsterleaks.com/uploads/1/3/0/8/130814774/4594820.pdfIn PDF document text
    • http://sifevip.ghvmsband.org/uploads/1/3/1/4/131452976/ef20f4cf29b2.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/1/0428/9311/5558/files/jojuboxudipoderivijodan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/sevibupesokofog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5765/9560/files/38148901590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/79608147772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2501/4684/files/27406206088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6197/6994/files/bewan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6078/8390/files/zugojajajefoxuvenodeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0639/9388/files/chemistry_formula_for_neet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2986/2312/files/copy_file_path_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8197/3416/files/redupizifivobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5021/3274/files/visajijipixis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/timozibanogesasemorufuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/wokolaxug.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 5

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_off00006c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C93 5620 bytes
SHA-256: e85f5e34af809542a5b5b021480ae6edddf5506418aea5ba3e5fe8b0e630bc7f
font_01_sfnt_off00007f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8E 9896 bytes
SHA-256: d0b39e0ac3d9579582ede5e1f8a138db8c9ff0756e8f7a8bf58cbf0ddbebd7fa

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