Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c078aaf2113283f…

MALICIOUS

PDF

41.8 KB Created: 2020-08-21 13:09:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a5990f061f106d38e689153560de14b6 SHA-1: 1610a9205881e64ca67c64bdc28b4ae252e4b5d3 SHA-256: 7c078aaf2113283fabb522977dfc502ff4a5df0f41e81621cf6a0ae532dd2acc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious due to its use of a redirector link disguised as a "Xero chart of accounts template" to lure users. The document contains a mass external PDF link farm, with multiple Shopify-hosted PDFs and a primary redirector URL that likely leads to further malicious content. The embedded URLs and the ML classifier strongly indicate a malicious intent to redirect users to potentially harmful resources.

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=xero+chart+of+accounts+template In PDF document text
    • http://files.dogsltdtraining.com/uploads/1/3/1/3/131383607/67589f51.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/1/0434/0000/3751/files/nutricion_enteral_y_parenteral_anaya_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4292/5726/files/tenancy_agreement_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0610/6528/files/learn_old_norse_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/10361753089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/cab_booking_app_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5771/7152/files/fejaxakenofan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/kaxubos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/duwifuwitaxik.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 1

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_off00005824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5824 5064 bytes
SHA-256: 5214fb255e8b658b4383ecd314c1dda2c0d4425ca2f710e9322a7e30256527d5
font_01_sfnt_off00006929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6929 10620 bytes
SHA-256: 31e01fbf8c16f71f76d9e4f5b1f4bed5ea794a169e6f9ff8a4d9534013e39b03
font_02_sfnt_off00008cb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB6 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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