Malicious PDF — malware analysis report

Static analysis result for SHA-256 155544745642eff6…

MALICIOUS

PDF

39.1 KB Created: 2020-08-17 14:46:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a82cc935139bbf360e798662398a94d1 SHA-1: bca6b10a9ffe1cb8b2308c8d25665a0e66e8213b SHA-256: 155544745642eff6801d3080669ea92f0f1402a40b02095d8badf6865f76c678
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, suggesting a link farm or phishing lure. The document body and heuristics indicate an attempt to trick users with a promise of useful information, likely leading to a malicious site. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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=combine+multiple+excel+tables+into+one+sheet In PDF document text
    • http://files.lembixlab.net/uploads/1/3/0/7/130739686/3978710.pdfIn PDF document text
    • http://files.soundboundhealing.com/uploads/1/3/1/4/131438616/c1c734.pdfIn PDF document text
    • http://banaw.nayansfiji.com/uploads/1/3/2/6/132695535/7925463.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/1/0428/0667/3574/files/togatirab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/66191770857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3404/9703/files/bandura_personality_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/94191707639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/25982031000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/zopifamed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/64132212617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/38685271998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/python_bind_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8246/files/26646609777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9387/6118/files/cam_ron_pink_fur.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 5

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_off00005beb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BEB 5192 bytes
SHA-256: 12ff91b23d14f3cdc5074623df5633cfeb90bdff093266b40c8d61a342521ea4
font_01_sfnt_off00006d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D67 9932 bytes
SHA-256: b4fe97cd8c19428ce0c24bf85f763c1265bb107f530a56a1687c5a858890bd2c

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