Malicious PDF — malware analysis report

Static analysis result for SHA-256 120ba9374b3da946…

MALICIOUS

PDF

41.0 KB Created: 2020-08-15 13:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b06f42c4d68cb177053311f5931bf71 SHA-1: a82faf86530b8575bf0bcb35de48387add1b10b7 SHA-256: 120ba9374b3da9461ce5376465dba2d78203fe27add49619f598463e6e94c887
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, indicating a link farm or phishing attempt. The primary redirector URL is identified as malicious. The document body, though heavily obfuscated, contains the malicious URL and other benign-looking Shopify links, likely to appear legitimate. The ML classifier strongly flagged this PDF as malicious.

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/wb?keyword=iso%209001%20version%202015%20afnor%20pdf In PDF document text
    • http://pagusede.dermatagespa.com/uploads/1/3/1/0/131070598/5486126.pdfIn PDF document text
    • http://files.arielzylberman.com/uploads/1/3/1/0/131070051/jepatopo-dalasuripol.pdfIn PDF document text
    • http://files.acuityhearingsolutions.com/uploads/1/3/0/9/130969183/nonaputuxi.pdfIn PDF document text
    • http://xujane.markkowaleski.com/uploads/1/3/2/3/132303382/ec54a3.pdfIn PDF document text
    • http://zusijibox.dawnamberknight.ca/uploads/1/3/1/4/131437792/pojamajem_bufiv_suginabexixod_sipovipikosoxu.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/1/0435/5801/1035/files/risc_in_computer_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8951/6962/files/26511862230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8308/8547/files/tikonaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/agamemnon_full_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5595/5613/files/xikijebusepakuxuruvota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1674/7170/files/prentice_hall_reference_guide_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/78302154513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/jotadib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/darurekuxadapazovikenefo.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 4

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_off00005f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F80 5608 bytes
SHA-256: 0b1e6c860335fab0df96ee8bbeac7592a6a59ce02fd8277f95c76ffa62e59474
font_01_sfnt_off000072a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A1 10820 bytes
SHA-256: c9aa9040960c6d554a24cc76a21f9b86cd6162a6a774fab754e65aa976e6f64c

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