Malicious PDF — malware analysis report

Static analysis result for SHA-256 36910c69812833bb…

MALICIOUS

PDF

42.0 KB Created: 2020-08-02 17:32:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73df0213faf9ab73914e05105f1635f5 SHA-1: 980bacc6350538a065ff0f5b2c4d6887d40655e3 SHA-256: 36910c69812833bb21c8e3298ee7e1ee979124ef1d2321340b7a7b9e0cb58f89
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify-hosted PDF files, indicating a link farm. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body contains a URL that appears to be a login page, suggesting a phishing or credential harvesting attempt, potentially facilitated by the link farm.

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=phc.+prontonetworks.+com%252F+cgi-+bin%252F+authlogin In PDF document text
    • http://files.kzoorca.org/uploads/1/3/1/4/131438784/nojoruziduta.pdfIn PDF document text
    • http://files.board.solonchamber.com/uploads/1/3/1/1/131163859/rabojofavafupozakebu.pdfIn PDF document text
    • http://files.makerystudios.com/uploads/1/3/1/4/131452794/setaterifaxizo.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/1/0430/4217/7181/files/78520549605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2900/2390/files/92658493864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7995/8679/files/5055316033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7805/0201/files/97128437150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9301/7247/files/iseki_tractor_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2717/7380/files/p90x3_classic_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/lapofawamikogozevofenine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8094/1729/files/nukivifusebazasuredob.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 8

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_off000062bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BC 5744 bytes
SHA-256: e9e964f693c18e74b3f93f46a977ccae88bdcb788a40eb179cd22770760bb56a
font_01_sfnt_off0000764c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764C 10872 bytes
SHA-256: 83f7e752ff7c1ab89a9e3c70afa69be1e4940016ac8a5768063da89ea42ddddf

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