Malicious PDF — malware analysis report

Static analysis result for SHA-256 edef8918a652341a…

MALICIOUS

PDF

41.9 KB Created: 2020-08-22 00:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6d323054370abb20ae280e321ec2026 SHA-1: 0df19bdae627cb3fbb296d3e6c90541e35faa7b1 SHA-256: edef8918a652341a66f1e3ade304eee8aca1190951e23fbb4ba54b11da42a1a3
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, forming a link farm. One of the primary links redirects to a known malicious redirector, ttraff.ru, which is disguised as a vehicle bill of sale. This indicates a social engineering lure designed to lead users to malicious infrastructure. No scripts were extracted, and the document body was heavily obfuscated, but the heuristic firings strongly suggest a malicious redirector and link farm attack pattern.

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=vehicle+bill+of+sale+illinois+pdf In PDF document text
    • http://files.azpeorialodge31.org/uploads/1/3/2/7/132740978/9540137.pdfIn PDF document text
    • http://files.communitychurchofkeystoneheights.org/uploads/1/3/0/9/130969681/fed8cd07f7.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/1/0437/8719/0430/files/gakopadunazibarimexawufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9901/9682/files/2379693751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3730/2679/files/96098753908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5101/4551/files/84052673418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9381/9541/files/6177225815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/fenosokejejemixiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2092/7655/files/ruxegunagabe.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 7

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_off00006628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6628 5252 bytes
SHA-256: 174ac8bf254f75e28759231b817da6d37329bdf4f36d90a05bf28669627fae35
font_01_sfnt_off000077f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F5 10276 bytes
SHA-256: c8120e487edc35701a172fdef190cd322f687eaedba5b2bf59dad34d9d7c9357

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