Malicious PDF — malware analysis report

Static analysis result for SHA-256 87cb20830ee2a155…

MALICIOUS

PDF

48.2 KB Created: 2020-08-27 16:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e66b2b75973a47f47b54f796bff53eab SHA-1: 78a10009a54c15430367666ff383fbee3d3d2be0 SHA-256: 87cb20830ee2a1550d68d3f31bdc27262693640adcd9812e301fc452c620b92d
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'ttraff.cc' redirector. The ML classifier strongly indicates maliciousness, and the presence of numerous external links suggests a phishing or scam attempt. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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=idealismo+platonico+caracteristicas In PDF document text
    • http://rawime.sheepprogram.com/uploads/1/3/0/7/130776334/1322385.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1672/2344/files/63625423192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/lulu_guide_mua_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9573/4937/files/pakagerumoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0672/1957/files/96621672656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4193/7818/files/yowhatsapp_2019_september.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5952/8355/files/bixip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/522859389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6440/7702/files/building_technology_text_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/nasozedimulitekogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6232/files/pawalumoxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8311/8232/files/30406649657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/15935943198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8396/4324/files/dawexovuxidabarudikan.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8A 4944 bytes
SHA-256: 2abe827a7d82faaa640ec500cf2c0c544e781d9cb051c18e60bdb6ad8d908434
font_01_sfnt_off00008031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8031 11100 bytes
SHA-256: 959e16f9f58a133cd79e29caed9a33cbd956b70be54f42906032b15140dfa016
font_02_sfnt_off0000a433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA433 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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