Malicious PDF — malware analysis report

Static analysis result for SHA-256 da7c87764df94b4a…

MALICIOUS

PDF

41.0 KB Created: 2020-08-05 04:25:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a1c65ef865a1a8b8f3c2c47ac3feb67 SHA-1: 1e83e67d043292699a6bd5bf3524a702ad824713 SHA-256: da7c87764df94b4ad01f99225d659b5d1948d239b28423a912ba7a03790325d2
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link to ttraff.com is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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/wb?keyword=dutch%20corporate%20governance%20code%202018%20pdf In PDF document text
    • http://files.nicolesmacaroons.com/uploads/1/3/1/4/131408930/8373895.pdfIn PDF document text
    • http://files.julindassalon.com/uploads/1/3/0/9/130969172/nutuwupuwoga_molumof.pdfIn PDF document text
    • http://files.thefreshproduce.net/uploads/1/3/0/9/130969461/8871fd5630b2.pdfIn PDF document text
    • http://files.ataofallonmembers.com/uploads/1/3/2/6/132695200/8837149.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/1/0428/9835/8432/files/8003629611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7985/1414/files/55366541832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6553/1806/files/7824581255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/dajemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9730/8840/files/22222514580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7479/8247/files/27275855043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/manual_windshield_wiper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1699/4466/files/9209615822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0898/2165/files/febotazafasiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.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 5

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_off0000607c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607C 5784 bytes
SHA-256: 9d38426350fa1199626774e9b173952ef00fa0e301a6fca0aec14a70f45ab99c
font_01_sfnt_off00007441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7441 10028 bytes
SHA-256: ac42ede210e2844985c6632bc9e002dc2f00bf7b1c35372f985b8dbd8044dbe7

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