Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f35fa97c493f5cb…

MALICIOUS

PDF

43.6 KB Created: 2020-08-09 19:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15911f140a54990f4e5ecbded7e0374b SHA-1: 7d99b0c8e1423a2030574f58d82c68e6610d97d0 SHA-256: 5f35fa97c493f5cbd652a5733ffc5cc1930863e2f243c1965e0c73e8b085f0e6
194 Risk Score

Malware Insights

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

This PDF document is designed to appear as a legitimate accounting standard document but contains a large number of embedded links. The primary malicious link, 'https://ttraff.com/pify?keyword=accounting+standard+9+icai+pdf', is identified as a redirector to malicious infrastructure. The document also contains a link farm of 28 external PDF links, likely for SEO manipulation or to host further malicious content. The ML classifier strongly indicated maliciousness.

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=accounting+standard+9+icai+pdf In PDF document text
    • http://files.allergyeasyliving.com/uploads/1/3/1/8/131856380/346d6436.pdfIn PDF document text
    • http://files.lisaguice.net/uploads/1/3/1/4/131453870/wowilozif-nakupakuzun-rezima-lozejiw.pdfIn PDF document text
    • http://files.svhcva.org/uploads/1/3/2/7/132712072/79a4447.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/1/0430/4509/3533/files/redofev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8597/1112/files/app_secrets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/paropexozazim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5285/files/39842577399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7814/7491/files/51092605024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6620/4066/files/fakexufavobedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3480/4375/files/peremubuxagiler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7958/1352/files/vosunakovubuxuruzibowukez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3461/4688/files/tewatifew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7786/9476/files/unique_list_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1143/1838/files/automatismos_industriales_descargar.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_off000067ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EE 5436 bytes
SHA-256: 548dd3417b86baf81b738df47ca25c30be6b5dfd8d5abd56bb5c5ab4017af0a7
font_01_sfnt_off00007a7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7E 12288 bytes
SHA-256: db4c948386424a9e63aca482599274729f9c8ab96e5cd4e4ec66af9dd96daa59

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