Malicious PDF — malware analysis report

Static analysis result for SHA-256 5897fb1961cb7a0c…

MALICIOUS

PDF

39.0 KB Created: 2020-07-29 22:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8c3a305d7d18b0dd7b55b2ce9904679 SHA-1: 913d9f40c3df5f55ab22f6b7f9935d8dd8ae2eb1 SHA-256: 5897fb1961cb7a0c10c74dc691f9cb32ee753d2a7c730c77caacbf0874ea3242
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm, with many links pointing to Shopify-hosted PDFs, likely for SEO manipulation to increase visibility. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains keywords related to the malicious URL's query parameter, suggesting a lure.

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/pify?keyword=scratch+coding+cards+pdf In PDF document text
    • http://files.sfvcca.org/uploads/1/3/1/4/131437295/46bbf84e7ed.pdfIn PDF document text
    • http://files.alpineathleticchamp.com/uploads/1/3/1/4/131409385/3f2df6cfd3.pdfIn PDF document text
    • http://files.ewiechart.com/uploads/1/3/2/3/132302913/gomokiwu-dapewijutufose-jofumuvusu.pdfIn PDF document text
    • http://files.musicinterestfloor.net/uploads/1/3/0/9/130969548/wimidulug.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/1/0431/1616/7328/files/25584435392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2557/files/dafofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7405/files/pidasadafotoduxopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5698/0377/files/benezojejaxej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/lazeloniwutibusadama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nozawilod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5915/8938/files/14765398734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/74728328285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8360/3873/files/19513734781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/vevok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4644/4960/files/zatuvesiteni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1916/5086/files/89599003667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/mixuzanatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4629/files/duzisapix.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_off00005b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B99 5160 bytes
SHA-256: 539a54313e16a7299be62be02f7d71903cfbd1240aa3ddd632e5100a6fa23117
font_01_sfnt_off00006d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0A 9992 bytes
SHA-256: a2d540c300eadba94d13d966314e7cc51dd9cab422bd494e8727296b9d69f60f

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