Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1eeda4d494c0cc4…

MALICIOUS

PDF

40.6 KB Created: 2020-08-01 05:45:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d490722f8af60622d8816806ffc8c46b SHA-1: caab6f81c5ab76b670c50b9426ceb7e9902234e3 SHA-256: d1eeda4d494c0cc4103a7e5990582518bab6722a0ab41201b6e72ac185f723dd
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to shopify.com domains and one critical link to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=precalculus+fifth+edition+pdf', indicating a lure to a potentially malicious site. 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.cc/pify?keyword=precalculus+fifth+edition+pdf In PDF document text
    • http://files.vibrantlyalive.com.au/uploads/1/3/1/3/131383493/kumazekidek_movonavu.pdfIn PDF document text
    • http://files.dancestudiesuoft.ca/uploads/1/3/0/7/130775102/vozidowoviketuwa.pdfIn PDF document text
    • http://files.murray-company.com/uploads/1/3/1/0/131070452/jilumirim.pdfIn PDF document text
    • http://files.lincolnfencecontractors.com/uploads/1/3/2/6/132681938/7c5f525598fb.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/1/0438/4600/8982/files/reinstall_npm_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sesolofulazige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/81362287021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4732/9702/files/nesitativiwirev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6820/2901/files/39204818410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6893/8647/files/44777480114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6590/1210/files/90581326456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3412/3160/files/56527174608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/zupefonowodebovosura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81988232477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9802/1793/files/99240085777.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_off00005f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8E 5244 bytes
SHA-256: f4ffb96ff743790a47c20dc70f166abbcc318653f3d29c2ca4a7c4b21f3293e0
font_01_sfnt_off0000715b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x715B 10572 bytes
SHA-256: 20d09e9ff06380c6d917ba744e5114dce0481a1ea95687dfd3e084b98af94081

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