Malicious PDF — malware analysis report

Static analysis result for SHA-256 c742b585c8613fdf…

MALICIOUS

PDF

42.5 KB Created: 2020-08-24 01:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36b900ba64647ddd3e7724a51e367eec SHA-1: 20c6b149294d06c816d1e78c838eebcf612897e9 SHA-256: c742b585c8613fdf4041c448c22e1b72961e2bb129a959b417e72ed3e4148f23
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, but one critical link directs to a known malicious redirector at `ttraff.ru`. This suggests a link farm or redirection attack designed to lead users to malicious 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=ieee+citation+style+guide In PDF document text
    • http://files.l2flourish.org/uploads/1/3/1/6/131606630/zatixolaz-vebaduvuliden.pdfIn PDF document text
    • http://files.chchgymnastics.com/uploads/1/3/0/7/130775484/votafureli.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/1/0427/8288/4006/files/18954351293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1037/5325/files/65633498739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6611/1638/files/minecraft_hunger_games_maps_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9159/1317/files/49676464635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/2144485007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0456/9946/5372/files/livefubapumifazido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9586/6010/files/57877259493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5719/2853/files/college_of_glamour_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/24993988439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8844/5591/files/extent_report_in_selenium_webdriver_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/abdul_hameed_adam_books_free_download.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 3

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_off00006892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6892 5048 bytes
SHA-256: dabed3242663c8902a2bbaa928c5c50e0702579afef65593e5c0839e74bcb513
font_01_sfnt_off000079d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D0 10444 bytes
SHA-256: 92e517ecd05234f6a61713f74a2666eaa9bb6ba395fede55ae11ca9aadb47770

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