Malicious PDF — malware analysis report

Static analysis result for SHA-256 517eed44f4bed7af…

MALICIOUS

PDF

40.0 KB Created: 2020-08-16 12:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6954a10b0cdb0cd76e1fb6a518e86921 SHA-1: 251033e5bcf1c99256fc4234c7347298b17a0b4e SHA-256: 517eed44f4bed7affb0ac96828f5d9bae8b4fd527bc1ea2acf50053504b0f3ea
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'three phase wiring diagram pdf' and includes the malicious URL, suggesting a lure. The presence of a large number of external PDF links also indicates a potential SEO link farm or a method to distribute 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.cc/wb?keyword=three%20phase%20wiring%20diagram%20pdf In PDF document text
    • http://files.eyretonponyclub.com/uploads/1/3/0/9/130969153/7674e0e5b687.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/1/0431/4251/2791/files/online_converter_to_word_free_download_full_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7702/5446/files/eenadu_epaper_today_telangana_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4864/8354/files/bevepebolekowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/39329955005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9369/5395/files/cercanias_barcelona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/ripinapejokozete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2231/files/ratuvuwemakibewuranisezod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/teral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9434/3841/files/xikud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4563/2665/files/ejercicios_categorias_gramaticales_2o_eso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9749/6488/files/lego_hogwarts_castle_instructions.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 4

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_off00006042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6042 5464 bytes
SHA-256: 0845f64694f5609249fd310ce4a0940bcd06a4ddeddee8783b2505323ba908f4
font_01_sfnt_off000072b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B9 9692 bytes
SHA-256: bb76b28bd2de327b071f69313e14e41d8da4794a45abcaed12fd33889c65f439

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