Malicious PDF — malware analysis report

Static analysis result for SHA-256 b20ecdb52fa27842…

MALICIOUS

PDF

41.1 KB Created: 2020-08-18 17:13:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e0c1f3669243c7606c7c92b94639a30 SHA-1: ae817e1146fb53b73c76abdfdbd267c37df4ae5e SHA-256: b20ecdb52fa278427687aa4b12ae3da0380a6d7092a2ccf62985552f84ff6432
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many of which are hosted on Shopify, suggesting a link farm for SEO poisoning. One prominent link, disguised as 'floor plan software free', redirects through 'ttraff.cc', a known malicious redirector. This indicates a social engineering attempt to drive traffic to malicious sites, likely for further malware delivery or phishing. 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.cc/pify?keyword=floor+plan+software+free In PDF document text
    • http://files.northbeavercontracting.net/uploads/1/3/1/4/131407194/ca9cb88f8dd94e3.pdfIn PDF document text
    • http://rogom.dirigoensemble.org/uploads/1/3/0/7/130739860/jowaneronopizon_tomakiv_tetekivazipomed.pdfIn PDF document text
    • http://files.strive4business.co.uk/uploads/1/3/1/4/131437563/473a858fe98.pdfIn PDF document text
    • http://pavafozej.kieraotooleartist.com/uploads/1/3/0/7/130776054/wimojovav.pdfIn PDF document text
    • http://lavix.mayigarabatos.com/uploads/1/3/0/7/130775162/8307674.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/1/0431/6374/6465/files/66622406360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1898/5372/files/susovisukogetoxezep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/zajokezeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8314/4093/files/luresokuzuvitixebad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6570/4602/files/grenfell_report_leaked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7987/4213/files/46973267067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3317/2885/files/cisco_5500-_x_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/20232918965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1786/1277/files/formatao_da_bibliografia_abnt_2018.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_off00006444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6444 4940 bytes
SHA-256: b940fb66ac2c1adfd3e9f84c4216307dd0d315bcf68d3900aed28c420504e4ca
font_01_sfnt_off0000752f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752F 10156 bytes
SHA-256: 951897f29e752122f0a75cb85dd9ee7619fcbfa5ec0669866a4d5940039d109f

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