Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b74f8ae2d96514e…

MALICIOUS

PDF

41.1 KB Created: 2020-08-23 17:47:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 689ba993dd336e2124c67485142efafd SHA-1: a0316bac54f3274ff9f8242b20a7ece340c35be0 SHA-256: 9b74f8ae2d96514eb47e4bf5d5c1e5c0aaed37f4facfba987dbfea3da1f5b413
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify-hosted PDF files, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to distribute further malicious content. The document body contains garbled text but also includes the URL 'https://ttraff.com/pify?keyword=cat+creator+android', reinforcing the malicious redirector finding.

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=cat+creator+android In PDF document text
    • http://files.nextlevelgymnastics.net/uploads/1/3/1/0/131070689/766860.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/1/0427/6381/3020/files/99461082506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28391359898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/33552706527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3506/5510/files/19807016113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/lipekajepotozoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7795/0881/files/el_interes_superior_del_nio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/strengths_and_weaknesses_of_utilitarianism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1663/2994/files/amarula_cocktails.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/81684491057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3704/7449/files/yoga_asanas_and_their_benefits_with_pictures_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8619/2546/files/xuvusijamukugadeline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8206/2753/files/bijur.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 1

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_off00006393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6393 4628 bytes
SHA-256: 41227109df8c4455b98732769ed0b82ccd1edab1d6a0295785a6a0c956f6d04a
font_01_sfnt_off00007352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7352 10612 bytes
SHA-256: 05cdd16d132ed811d2b535137cee0422925ff26e84ea22bb37b84075b7d35a37

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