Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebedf13d98e7966c…

MALICIOUS

PDF

46.8 KB Created: 2020-08-22 03:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03cfa171dd869e5be2536c4531032e88 SHA-1: 6ed5e7c938fd1447acc9c31b6bbc4858136cada4 SHA-256: ebedf13d98e7966c608c0e645ee1aa5f5dd4dc97fd811d532d0043ee9dc4f864
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, however, directs to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests the PDF is designed to lead users to malicious infrastructure.

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=book+review+definition+pdf In PDF document text
    • http://files.veescape.com/uploads/1/3/2/7/132740181/8034747.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/1/0432/6300/0734/files/artificer_apprentice_question_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5293/3021/files/libreoffice_impress_background_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/64083373432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7394/6275/files/beckmann_and_ling_s_obstetrics_and_gynecology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/25912499018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/95614058719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1972/1115/files/48203605202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6455/6710/files/benogulegarekejor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5199/1719/files/senior_network_administrator_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/18th_brumaire_of_louis_bonaparte.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 2

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_off00006f32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F32 4668 bytes
SHA-256: 6127c306f0e1ab520d51e6b1a105e3248b498cb57599ef87be7ebc453dfba27a
font_01_sfnt_off00007f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F34 9780 bytes
SHA-256: 43047890d76f6ef66d54eb914dc730adb0a388e661aeac6ba3898965c8864495
font_02_sfnt_off0000a0a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A1 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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