Malicious PDF — malware analysis report

Static analysis result for SHA-256 43cc61ff72a46088…

MALICIOUS

PDF

41.2 KB Created: 2020-08-15 12:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51e2d375d27ed9e5b684711c4f37e1f5 SHA-1: 6b950a57d76bb034885617411052f6c801d0d27a SHA-256: 43cc61ff72a46088d9a47eef4e5c4d5188c9d567d1339f85664aa85680fac5da
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 external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/wb?keyword=inversor%20de%20voltaje%2012v%20a%20120v%20diagrama%20pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on domains like cdn.shopify.com, suggesting a link farm designed to redirect users to potentially harmful sites.

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.com/wb?keyword=inversor%20de%20voltaje%2012v%20a%20120v%20diagrama%20pdf In PDF document text
    • http://files.danaberger.com/uploads/1/3/1/4/131438228/funisefisudev.pdfIn PDF document text
    • http://wozozalis.theclayloft.co.uk/uploads/1/3/2/6/132681396/sorukijitinosul.pdfIn PDF document text
    • http://files.j2academy.com/uploads/1/3/0/9/130969624/a1278113.pdfIn PDF document text
    • http://genidubid.redrockfurniture.co.uk/uploads/1/3/1/3/131381787/pozududilune.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/1/0433/0897/4235/files/nivefulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/54147105207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5763/5743/files/begezozitunutogal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/fawilobufud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3013/3408/files/ace_academy_ies_conventional_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/dell_r740_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/lubipimen.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_off00005f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F75 5760 bytes
SHA-256: 41ca9b9c01974dc25dde7617c241428a4172235e88e6084554777761a1ff4f8c
font_01_sfnt_off00007311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7311 10868 bytes
SHA-256: 20141b3f9158d8fd346618c29ee17e7acdbe692e9d152214a4e5b6283c6a389a

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