Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c17f933bb64c9e8…

MALICIOUS

PDF

40.6 KB Created: 2020-07-31 19:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b60bfaef0cec0aac0b185b7a0429f935 SHA-1: 3fee4c4b4bf23460876d104cf87b761d65a3bac7 SHA-256: 5c17f933bb64c9e810bcf8a76ef079e8ce2a26af0a2361aca36dedd79bad2bd5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links pointing to a redirector service (ttraff.cc) which then leads to external PDF files hosted on various domains, including Shopify. This pattern is indicative of a link farm designed to obscure the final destination and potentially distribute malicious content or conduct phishing. The ML classifier strongly supports the malicious verdict.

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=larval+acid+vanilla In PDF document text
    • http://files.bwnvva.org/uploads/1/3/2/6/132682342/tanegukuret.pdfIn PDF document text
    • http://files.nypdvolleyball.com/uploads/1/3/1/4/131407435/554429ccc22f3.pdfIn PDF document text
    • http://files.mshannahfreeman.com/uploads/1/3/0/9/130969434/c8a1c3689ee27b4.pdfIn PDF document text
    • http://files.christiestimber.com/uploads/1/3/2/3/132302815/a80bec9c772bc.pdfIn PDF document text
    • http://files.mymalloryenglish218.com/uploads/1/3/1/3/131381679/dipifo.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/1/0433/6576/1176/files/44240798974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/39713764700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9544/8997/files/72689200946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3866/3079/files/vonizabamifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sujaxitedidubabupopivup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4603/4853/files/zopexezufemorexus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/59212718608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/degejuwetisagemudow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/8028389218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/jojutekebumufavomalilowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4054/6714/files/mixidevetu.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_off000062a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A9 4756 bytes
SHA-256: c03a33cf7fe988448b55768f37d818c9f687d175acce101b8c85dfaf486fe533
font_01_sfnt_off000072e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E8 10264 bytes
SHA-256: 60ee71a9e1bb19f5548d2b5de7c221055659c3e3631f3c1d3cf4353afbf39f25

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