Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6da8fe14d109417…

MALICIOUS

PDF

43.6 KB Created: 2020-07-24 09:16:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 940c6e60b807f2978559eaa238efc9d3 SHA-1: 6855d4c5b6a18659fa89951c3f4c157149ea8547 SHA-256: b6da8fe14d109417851ef80b7400d344439130065c1797edc6c77445b119c20b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to ttraff.ru. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify-hosted PDFs. The document body is heavily obfuscated and unreadable, but the presence of the malicious redirector strongly suggests a phishing or scam attempt. No scripts were extracted from this sample.

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/wb?keyword=pr%C3%A1ctica%20cl%C3%ADnica%20en%20gastroenterolog%C3%ADa%20y%20hepatolog%C3%ADa%20pdf In PDF document text
    • http://files.eosfp.com/uploads/1/3/2/6/132696018/2500595.pdfIn PDF document text
    • http://files.hesswebber.com/uploads/1/3/0/8/130814601/xoxikoxukiti-xokesikopotak-pulejexurinozaj.pdfIn PDF document text
    • http://files.somesugarwithspice.com/uploads/1/3/1/4/131453990/jidegotaxubegot.pdfIn PDF document text
    • http://files.diegelrabbitry.com/uploads/1/3/2/3/132303163/6389eee500f.pdfIn PDF document text
    • http://files.mectacprinstructor.com/uploads/1/3/1/4/131437740/2f469132278.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/1/0432/4897/6032/files/2655787223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4896/0151/files/wazadalidufot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/mowiwozaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/takuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/xuxilogegalapazizozolura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/vipat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9656/4131/files/pegedibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2950/3901/files/33434736443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2317/8656/files/kojuvatafawavov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6990/6854/files/dutujoxakokemesevubakewa.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 8

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_off000069c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C9 5596 bytes
SHA-256: dddd456db8ee8a1d8bc38da266f747ff38c1c3baedf6350a89c09b36ffc38dda
font_01_sfnt_off00007c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C30 10172 bytes
SHA-256: f8cdb9221235b0d04aea4a0075aa3d89f0ce8f1b7238728e811e2f0b5c7adfa8

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