Malicious PDF — malware analysis report

Static analysis result for SHA-256 59a93e7ba779b580…

MALICIOUS

PDF

33.5 KB Created: 2020-08-20 09:04:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2de1a8553c67048c21f894befbb5cc8 SHA-1: 8a446fd6edba883c76a19c953524ee41fc1005d2 SHA-256: 59a93e7ba779b580f32b3bf2e58ffeefd4ad5e9bd12850b4cf9ac9fea13aea68
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 identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the primary malicious URL. The presence of a large number of external links, many pointing to seemingly unrelated PDF files, suggests a link farm or SEO poisoning tactic to obscure the malicious intent. No scripts were extracted from this sample.

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=copy+paper+5000+sheets+canada In PDF document text
    • http://files.bodyconfidenceaustralia.com/uploads/1/3/1/3/131379510/8238485.pdfIn PDF document text
    • http://dorev.msvillwock.com/uploads/1/3/0/8/130813095/xopugudesamob.pdfIn PDF document text
    • http://files.gsjministries.com/uploads/1/3/0/7/130776573/935417.pdfIn PDF document text
    • http://files.shakespearefreelibrary.com/uploads/1/3/2/7/132740204/veduwoduvujapakobusi.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/1/0440/6735/6824/files/reading_comprehension_year_6_worksheets_free_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8537/3333/files/18563600985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0620/9702/files/d_d_5e_baldur_s_gate_descent_into_avernus_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2356/3925/files/nukoxopexapopalut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5420/2018/files/tanikosijebeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9662/7616/files/l_alchimiste_en_arabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5484/0485/files/26021997670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/aircraft_weight_and_balance_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68906731860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5960/0798/files/kekidosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0577/9878/files/energy_code_ace_trigger_sheets.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_off00004789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4789 5400 bytes
SHA-256: 4e225820d35f21177468c12cc57ea0097026f98b4acec251ecb10ae7b61d8100
font_01_sfnt_off000059e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E7 9244 bytes
SHA-256: e59364f6a640a4e1cba917c8cf7b4b327248d03dddf0388432e77a1812f02606

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