Malicious PDF — malware analysis report

Static analysis result for SHA-256 66ff68ee79e59631…

MALICIOUS

PDF

58.1 KB Created: 2020-08-20 19:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2eb27681bbd88ae10b72a59a6e93cd18 SHA-1: 5da9e9fbf46fe043176d2c2bf2768795a5ba2891 SHA-256: 66ff68ee79e5963107c30df18200de0609a3f16405b7429f1d46060e6c0645e0
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking Shopify URL, suggesting a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of multiple external links points to a link farm or redirection strategy.

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.ru/pify?keyword=gif+ppt+templates+free In PDF document text
    • http://vadezov.polymathworkshop.co.uk/uploads/1/3/0/9/130969539/fusowe.pdfIn PDF document text
    • http://files.dcmspto.org/uploads/1/3/1/4/131438203/a9d309.pdfIn PDF document text
    • http://files.rautoulab.com/uploads/1/3/1/3/131398244/fc9cefb108d0e27.pdfIn PDF document text
    • http://bupukob.martinsrestaurantcayucos.com/uploads/1/3/0/7/130739616/faxekabi.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/1/0431/6073/1808/files/tv_guide_buffalo_ny.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3119/7856/files/human_body_systems_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8873/1543/files/galiwatukozaxisusixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5290/0260/files/jisuxeninixirujewebuteloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/fajadise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/centum_vp_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4910/6073/files/10303946533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9236/files/legasanepofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/moziximigetadilop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/zoriwofipisajewadupesovek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9600/7065/files/nazudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2140/9184/files/15435235406.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_off0000a7a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7A4 5076 bytes
SHA-256: 1c646ef4400b3e981d13f27ffd2cee28c556f69107ddd93544a9aa0a879b34ea
font_01_sfnt_off0000b8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D6 10212 bytes
SHA-256: 89e0992616ac66d73d3ae945b268493e1b6f63eeb2b83b65e0c688d545ba7625

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