Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c9c0237241dcf27…

MALICIOUS

PDF

41.0 KB Created: 2020-08-23 07:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8742279e50180fbe811652d3ba059290 SHA-1: b0ee94e8d9d557ead618c73a6467ec897160676b SHA-256: 5c9c0237241dcf27be79de69e0074a81fb496a736bc301c93318483ccec6b57e
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 identified as malicious. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of a large number of external PDF links suggests an attempt to manipulate search engine results or distribute malicious content through a link farm.

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=nokia+android+one+phone+review In PDF document text
    • http://files.getstitchedsewingstudio.com/uploads/1/3/2/6/132695663/losilivevune.pdfIn PDF document text
    • http://regamivid.vhcministry.org/uploads/1/3/2/6/132680813/c2803eb87.pdfIn PDF document text
    • http://files.frhsmusical.com/uploads/1/3/2/6/132695416/240020.pdfIn PDF document text
    • http://files.makercrew.com/uploads/1/3/1/3/131379699/7090714.pdfIn PDF document text
    • http://files.lindagrahamdesign.com/uploads/1/3/1/6/131637374/9219875.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/1/0448/1007/6321/files/direct_sequence_spread_spectrum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4946/6526/files/control_total_de_calidad_feigenbaum_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/suvefarofovazik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4626/3201/files/japudonokobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9521/8594/files/belles_phrases_d_amour.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/chrome_browser_old_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2894/5815/files/natala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/corona_render_c4d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9633/2705/files/livro_abandono_afetivo_indenizao_por_dano_moral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2453/9802/files/airtel_bill_in_excel.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_off000062e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E6 5024 bytes
SHA-256: d05b6654ec45af01e1c042bcb1016de6c8a24f0f3c3bb4a4eb588f18369f1177
font_01_sfnt_off00007408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7408 10300 bytes
SHA-256: 46f2a8d052a85c4b4e4d59ec1939166f20957b87c83eeb23c956e086c34d179b

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