Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee43b305417b1c08…

MALICIOUS

PDF

70.2 KB Created: 2020-08-24 00:19:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf9e59ecd9e610f8f55018efc6be5006 SHA-1: e8a9a089d2bccfb2eb360b29076fedb39e626d57 SHA-256: ee43b305417b1c086403f8b29c58838d734f32596caade03d00e2c5483a0fea5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing to the URL https://ttraff.com/pify?keyword=kdigo+ckd+guidelines. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous links to external PDFs, many hosted on Shopify, combined with the malicious redirector, indicates a phishing or malware distribution attempt.

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=kdigo+ckd+guidelines In PDF document text
    • http://xuxuwowi.christineomalley.com/uploads/1/3/0/8/130874276/4bcf4f706.pdfIn PDF document text
    • http://files.kindred-connection.com/uploads/1/3/0/8/130874354/ef284a3d93.pdfIn PDF document text
    • http://files.lyndonstatesga.com/uploads/1/3/2/7/132712324/fejotugenifa-watikizar.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/1/0428/7266/8319/files/amor_a_dois_andrei_moreira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2255/7095/files/sodolunesixuniwafifozijez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/funimenefisij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6912/9372/files/89088092666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3257/5132/files/24838803217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/58735802648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/bikini_body_guide_food_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/pitorepobalakiruko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/32418085860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1993/4628/files/71641111468.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B3 4836 bytes
SHA-256: 4892ccc7d4e313b98781fea7b7b74c3785bb6527f796d73d0c5129353ef5d628
font_01_sfnt_off0000d23a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23A 10396 bytes
SHA-256: cbe850f3a33d57cd1fc2bb2ad7592123a78dd89f337327f7cb5bdb694b14775d
font_02_sfnt_off0000f601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF601 16320 bytes
SHA-256: ca283c46b3c9bd5c908c251a3926aa6e8a66e9b69d7ae241d46e273cf24a2221

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