Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ca425588a64f7b…

MALICIOUS

PDF

45.9 KB Created: 2020-07-30 13:09:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fd9fff469b414f5471dfaa54355e85f SHA-1: 3e6ce24e3f55b2d352fe6e1c55319d1d186120bc SHA-256: 58ca425588a64f7b7f79ad079caa27c7864e3d67ad4e301f48479ed9d17e29b5
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One prominent URL, 'https://ttraff.ru/pify?keyword=cintas+catalog+2020+pdf', is flagged as malicious, suggesting a redirection to a harmful site. The presence of many external links, including those hosted on cdn.shopify.com, indicates an attempt to distribute malicious content or conduct phishing operations through a large number of seemingly benign, but ultimately controlled, landing pages.

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=cintas+catalog+2020+pdf In PDF document text
    • http://files.derekwheaton.com/uploads/1/3/2/6/132682934/a5cbf986bb60.pdfIn PDF document text
    • http://files.holytrinityholmfirth.org.uk/uploads/1/3/1/3/131382955/4007873.pdfIn PDF document text
    • http://files.essiacnorthwest.com/uploads/1/3/2/6/132695525/xilet_pokezi_luguzorojud_vobetalurafiw.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/1/0439/9942/8766/files/mujupilide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4565/0586/files/dukara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/wowejowikufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/pifizilitanitowiratef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2417/7557/files/28992658356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/nudefalovuvujeneni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/24472401377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66541571973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vizinedidobirefeguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/gupalidowowuwiniwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0890/0772/files/sazurelomavanipiwemija.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_off00007501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7501 5192 bytes
SHA-256: 32e912b272ba55285cf5e85da2247cd9bd2f4d4752405e3a08f1257e4499969a
font_01_sfnt_off000086b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B2 10700 bytes
SHA-256: b5e103268aef9a02e5c59b23af1575ab16240c8ee8c21e5607ab01779a238d0f

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