Malicious PDF — malware analysis report

Static analysis result for SHA-256 58acb259b8311628…

MALICIOUS

PDF

103.7 KB Created: 2020-07-31 13:25:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36b42b6c1553fcc539bee77c62ddf34d SHA-1: 30e64909b4421beb8986e26d0d9577f455c2e254 SHA-256: 58acb259b83116288c60c28b91e9dc42bf272dfd9fc6250a495a926b74e70598
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 of which point to Shopify domains but are likely part of a link farm designed to manipulate search engine results. One critical heuristic identified a link to a known malicious redirector at 'ttraff.cc'. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack pattern involves directing users to malicious infrastructure.

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=les+caprices+de+marianne+texte+int%25C3%25A9gral+pdf In PDF document text
    • http://files.narrins.com/uploads/1/3/0/7/130740022/805360.pdfIn PDF document text
    • http://files.mortonbaptistchurch.com/uploads/1/3/1/8/131871568/1040026.pdfIn PDF document text
    • http://files.skylarkpubl.com/uploads/1/3/1/8/131871907/lewofikiwi_pefivoro_pawifebimijomet.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/1/0429/7677/2250/files/zitefesalokuvokex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1682/1672/files/92099565587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5710/9399/files/59333901817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6598/2632/files/91315196621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1329/7560/files/36338174450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5772/6118/files/dogivagidelajozunireg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1238/2116/files/52111198056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6095/3249/files/fogolubojewata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7866/4867/files/vivizoxosejirukem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/71793266053.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_off000155ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155AD 5304 bytes
SHA-256: 151e1804d83bb8d1e2b1dd6a99911ffe6b8849841ddaa15c7744eaf5f5cef2c7
font_01_sfnt_off0001675e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1675E 12672 bytes
SHA-256: c8ef5ebff422f33920ca6e95151dcdd44fbf387de52d9fe4dea7fc629fc55050

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