Malicious PDF — malware analysis report

Static analysis result for SHA-256 53f664858b963a01…

MALICIOUS

PDF

39.9 KB Created: 2020-08-05 02:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2938a9511c2f3a11d709d02a1fc51659 SHA-1: 766ddf644ded3fdb347d1674fe83ded973172920 SHA-256: 53f664858b963a01f20f6052a0b565509f11a4813c770023eaa6480f13c8b182
202 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, 'https://ttraff.com/pify?keyword=pdf+to+dwg+online+without+email', which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a lure to a malicious site. The presence of a download button heuristic further supports the social engineering aspect of this attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pdf+to+dwg+online+without+email In PDF document text
    • http://files.dud-bud.com/uploads/1/3/1/4/131438274/werafigubogew_kagejanu_jokijozidasujo.pdfIn PDF document text
    • http://files.ballinasloe.coralleisure.ie/uploads/1/3/0/9/130969331/xukisi.pdfIn PDF document text
    • http://files.executive-advocate.com/uploads/1/3/1/3/131379321/a73eb63e8d82.pdfIn PDF document text
    • http://kipajix.digitalbankinginnovationapac.fintecnet.com/uploads/1/3/1/4/131453870/1613802.pdfIn PDF document text
    • http://files.tribranch.org/uploads/1/3/1/8/131856374/176229.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/1/0433/0687/7080/files/xefafozerokadugatevaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21617342462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/jixamojodegoraruburip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/bajer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1442/2687/files/zoromupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87294954422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78682713185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/xikapusapasemam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/wadimibunojisosuxitufulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/lupigokajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/81956961780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1917/9931/files/bepijufozesef.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005db7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB7 5140 bytes
SHA-256: 9dd0e8148e4a11514addd0ce2368b41d1963689b2822c7c73d7160f66afe7b0d
font_01_sfnt_off00006f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F22 10428 bytes
SHA-256: ab280a3bef7a44ed059a2b306c736f962ccfc0100d79b486abbf449a1e542da1