Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b14368dbcaa8672…

MALICIOUS

PDF

48.4 KB Created: 2020-08-25 20:33:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b591367215d35380745d69884346c253 SHA-1: 42e2263932cb157fc595bd66bea3e765bf508cf5 SHA-256: 5b14368dbcaa8672521a4f0756ee9369971630e68435c8705a7e3dd092e9b681
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links pointing to redirector infrastructure, specifically identified as a malicious redirector. One of the primary links leads to 'ttraff.ru', which is flagged for malicious activity. The document body, though heavily obfuscated, contains a URL that appears to be part of this redirection scheme. The presence of numerous external links, many pointing to Shopify domains hosting PDFs, suggests a link farm or SEO poisoning tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=chaudiere+saunier+duval+isotwin In PDF document text
    • http://files.yestelesummit.com/uploads/1/3/0/7/130775131/regumorikowug.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/1/0431/6856/3351/files/jodanobevuvoxiredixiwov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8030/2238/files/45763842370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/47303689936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/77683440785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1505/3213/files/cheat_sheet_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8685/5840/files/90849034447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8886/2622/files/51410556225.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_off00007b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8A 4968 bytes
SHA-256: 05a905f13cc639da0c5c3d4a7c1a569d8bbc1537a688deca3e0a5e021572bcfa
font_01_sfnt_off00008c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C79 12380 bytes
SHA-256: 0fa22f59e2c3bef0acc5fe13b5a2116269e45db17a3e1fd44ddf2f9540adace0

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