Malicious PDF — malware analysis report

Static analysis result for SHA-256 c43e79934f7aa76a…

MALICIOUS

PDF

39.1 KB Created: 2020-08-17 12:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2279c398752d18c040908131b3a836f4 SHA-1: 2dafd9253f41ebfd47828ab5312348c0f431040c SHA-256: c43e79934f7aa76ac2fd2d045a3680838988049236ed538d36d3028306c7c33c
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as 'Forrester research reports', indicating a social engineering lure. The PDF also hosts a link farm, with many links pointing to Shopify domains, one of which is also present in the document body. The ML classifier strongly flagged this PDF as malicious.

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=forrester+research+reports In PDF document text
    • http://files.sycamorebandandorchestra.com/uploads/1/3/0/8/130874065/b1f74.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/1/0431/6830/1212/files/hotel_standard_operating_procedures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/10576363223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6508/8936/files/wovezimitozoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2659/3445/files/26646436233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/sodusezufojawexuwopexiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9234/2939/files/relevance_and_admissibility_of_evidence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5339/7654/files/96672231747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/30732338434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1868/8424/files/66616238062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9008/1960/files/vafapuwajexisatukewita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/fululuxoxufagi.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_off00005be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE0 4944 bytes
SHA-256: 31680fd5f70de1cc1a0b6a849b1eeb09e5d6274327e212f58d3fc4a0754e101d
font_01_sfnt_off00006cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAE 10192 bytes
SHA-256: 81a36e11a57c802481d86fbcc68b0cbf5f215d36818dc3751993412aadc8138b

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