Malicious PDF — malware analysis report

Static analysis result for SHA-256 535559c856245a3f…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 10:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96052943d00a0e2a5a44b9683c4b7e24 SHA-1: 7ea91b1189b5b2e1556b47e824f745f5df9e28be SHA-256: 535559c856245a3f61505e9a4ccc73919d0bc5eebef7b09c28b3365455095ef9
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this URL and also references 'certificate of participation template word doc', indicating a lure. The PDF also contains a mass external PDF link farm, with the primary host being cdn.shopify.com. The primary malicious URL is reconstructed from the document body.

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=certificate+of+participation+template+word+doc In PDF document text
    • http://fadeza.radicalhealing.us/uploads/1/3/2/8/132814930/gubam.pdfIn PDF document text
    • http://files.messianiclaw.com/uploads/1/3/2/8/132815015/826316.pdfIn PDF document text
    • http://janowilas.patchesoftimephotography.com/uploads/1/3/1/3/131378850/takojuleza-zexud-gidebemonegil.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/1/0430/0832/7829/files/42864883110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/xesibidurikovejedemoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9301/6222/files/viriliralidivakuwepem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1136/5272/files/classification_of_drugs_kd_tripathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8049/8852/files/mijasejatuparusetubevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9776/6553/files/fopapigekuwijoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0946/files/relunomixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0614/7230/files/h100b_pulse_oximeter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/celia_cruz_azucar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6086/1845/files/44386874107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/51237669596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9235/2932/files/63446775865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9767/files/53324920012.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_off00006b7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7C 5120 bytes
SHA-256: b46d11168a757ce5d024b8d7b4e69dead913c6fedb16cb5685dc70dea2932fa3
font_01_sfnt_off00007cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD9 9884 bytes
SHA-256: 5276fdd1ac5b74896f024cbf2a1364556ce8a08fb079046ffc7d15c59a1bc6aa

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