Malicious PDF — malware analysis report

Static analysis result for SHA-256 effdda855b61c002…

MALICIOUS

PDF

42.0 KB Created: 2020-08-21 00:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9138369ba1a5b13a8ff4c0e67730e44f SHA-1: 24baf72eac7faf2820ec09c9488025df1163fe58 SHA-256: effdda855b61c0028f7a85bca376155efca517cc814d583829790911c7aa5c67
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector. This suggests a social engineering attack aiming to redirect users to malicious content.

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=alimentos+ricos+en+zinc+pdf In PDF document text
    • http://files.bellamymassagetherapykelowna.com/uploads/1/3/0/8/130874012/vozux_tixavom.pdfIn PDF document text
    • http://luvovirat.sjfmhrym.com/uploads/1/3/1/4/131438157/8045593.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/1/0427/9821/9420/files/zimixuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7713/1683/files/capital_and_revenue_expenditure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0027/4845/files/85697064291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2737/1931/files/rinaketofoselolomixobere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4855/9004/files/wizaxutujebudika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/69886976943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6743/9259/files/hyundai_motor_company_annual_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4409/2566/files/wivunup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4184/1571/files/tisowatuxomikep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8152/1565/files/cardiology_cases_for_medical_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/magizokoluredofet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/9380076251.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 3

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_off000063c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C9 5128 bytes
SHA-256: 6cc06026aff1a4d77227067451a4d362b27a1b6db8ed95158d3614b0b3c32932
font_01_sfnt_off00007529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7529 11396 bytes
SHA-256: 028fee4b458a65a76341d890a5557f304b548d7824e97f39300496a3afe81594

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