Malicious PDF — malware analysis report

Static analysis result for SHA-256 1586c18c93f7278c…

MALICIOUS

PDF

47.3 KB Created: 2020-07-22 09:17:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 68cd4f9cf0f295770b9287aa4d52ffb4 SHA-1: ef0faba26f3d2d3c00031debda0f4408259e5da9 SHA-256: 1586c18c93f7278ccbf5fe260d9f23cf35c6039904c8b4e3a24a831357645d74
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to redirector infrastructure, specifically 'ttraff.com', which is flagged as malicious. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, many hosted on Shopify, suggesting an attempt to create a link farm for SEO manipulation or to distribute malicious content. The ML classifier strongly indicates maliciousness.

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.com/pify?keyword=autosuggestion+%25C3%25BCbungen+pdf In PDF document text
    • http://files.joecostin.com/uploads/1/3/1/4/131453045/4272390.pdfIn PDF document text
    • http://files.hanovermassage.com/uploads/1/3/1/4/131406395/8821627.pdfIn PDF document text
    • http://files.thecoachmensclubhouse.com/uploads/1/3/0/7/130739690/5ddd5ad2ea.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/1/0436/6044/3813/files/guvemegubizubaloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/42140253853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4836/9319/files/gokiledimebebaxagadusali.pdfIn PDF document text
    • https://pobiwinut.files.wordpress.com/2020/07/lewuvivobitokegetaro.pdfIn PDF document text
    • https://tipaxoxabenu.files.wordpress.com/2020/06/58438832687.pdfIn PDF document text
    • https://kufopamasez.files.wordpress.com/2020/06/maxokuxewavigit.pdfIn PDF document text
    • https://janavitim807994190.files.wordpress.com/2020/06/burabimidosivanukatal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74808095599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/81998364001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3133/0969/files/pevitalawofug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5661/0971/files/10230324971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/3886560678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/68696866840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/merebogixibasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/xijikinim.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 4

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_off000079ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EE 5004 bytes
SHA-256: b7492774dc52b085b34c2a5c78783f979fc49c41ad0dea2433ff86c6c78e8076
font_01_sfnt_off00008acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACB 10816 bytes
SHA-256: e35abec8995e59134c850d09e21b79f25d53452a11191f2ba09a8a30d79799b4

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