Malicious PDF — malware analysis report

Static analysis result for SHA-256 c547a0b89e15e991…

MALICIOUS

PDF

34.4 KB Created: 2020-08-23 23:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e5c4feddaa08c042f280d212a2683671 SHA-1: 862bfbb90bb8dbd3b75b229b1d3ac3de1b987629 SHA-256: c547a0b89e15e99172084219d22f777ebd6926e81aa4b91a6493665217fe7b09
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body and embedded link structures suggest a link farm or SEO poisoning tactic, aiming to lure users to malicious content. The presence of a known malicious redirector and numerous external links indicates a probable attempt to direct users to a malicious site or download further malware. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=understanding+business+the+core+pdf In PDF document text
    • http://kafuxu.khemkhon.com/uploads/1/3/1/4/131452903/tepaxovu.pdfIn PDF document text
    • http://files.jasonacoombs.com/uploads/1/3/0/9/130969434/daguxutirowuveja.pdfIn PDF document text
    • http://files.royalcityfootclinic.com/uploads/1/3/0/9/130969220/wugosupekomewefogam.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/1/0432/6385/2708/files/dovuvixazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1427/4720/files/53334775551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6326/3910/files/tinulevemeraguzujaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9009/1940/files/mandated_reporting_training_arizona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/tasilitesinalinefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7509/3159/files/lamegubux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/bapogel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6879/8629/files/a_to_z_writing_practice_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/attributes_in_dbms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/72734857571.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 2

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_off0000470f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x470F 5516 bytes
SHA-256: b394f7e63493a148cf0487c908626176df9eee839f8964a40169e58150932067
font_01_sfnt_off000059bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59BB 10316 bytes
SHA-256: 24ba47b16a35980c9f3a6f7e683f00caf2847ddd14466899e02165274dfc66ff

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