Malicious PDF — malware analysis report

Static analysis result for SHA-256 e989a9b6a95e3462…

MALICIOUS

PDF

38.9 KB Created: 2020-08-13 22:23:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a704bfbac2c04b953b2c3baa0825614 SHA-1: 7ae1adad0aa2caf727883b181876aa29ef309f05 SHA-256: e989a9b6a95e346242b5f5e7e7b4bc698cd5123099dad6d030ba1a98c5121939
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to other PDFs hosted on various domains. One of the primary links redirects to a known malicious URL, ttraff.ru, which is likely used to distribute further malware. The ML classifier strongly indicated maliciousness, and the presence of numerous SEO-optimized PDF links suggests a coordinated effort to lure victims.

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=evowars.+io+mod+level In PDF document text
    • http://files.iamlegacy.net/uploads/1/3/1/4/131483019/c6b27585.pdfIn PDF document text
    • http://files.scsreadingschool.org/uploads/1/3/0/7/130775413/4149134.pdfIn PDF document text
    • http://garamunus.eyespeak.org/uploads/1/3/1/3/131383629/4519431.pdfIn PDF document text
    • http://files.aya-technologies.com/uploads/1/3/2/8/132815178/fezezerex_romiwawaja_vujapunusaf.pdfIn PDF document text
    • http://files.northforsythdeca.com/uploads/1/3/2/6/132695472/1899505.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/1/0440/5706/7685/files/fapukowodotidusavikafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7281/4245/files/mafimuloko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7572/1629/files/evenrude_trolling_motor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/fexelelubamabera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2506/1272/files/evaluating_algebraic_expressions_word_problems_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/82306476669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/71954778356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1757/4299/files/malaria_microbiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1157/0838/files/c_infix_to_postfix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/1092321220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/mipukug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7586/9599/files/simple_business_plan_template.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 7

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_off00005aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AEA 5112 bytes
SHA-256: c2566464f5a178239538fdc6733200c26a42d123505e4fa5cffcaf40e7933d43
font_01_sfnt_off00006c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4E 10528 bytes
SHA-256: b44ab74407b3775bc10f3b5b427a363b28730f97e0a394202813fab2cd4bd46c

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