Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8ef42b972f9d72…

MALICIOUS

PDF

45.0 KB Created: 2020-08-15 01:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52a434fa86476f17a83e9f5b95e581b8 SHA-1: c945369b396a61bbdf4cc1ad605801e5551ee6e7 SHA-256: 4c8ef42b972f9d72119a72687fdf19500bad278f8fc369e9b40042fc4e83644d
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to redirect the user to potentially harmful content. No scripts were extracted, and the PDF structure itself is not inherently malicious beyond the embedded links.

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=alisha+chinoy+songs+free In PDF document text
    • http://files.mediterranean-maudsley-forum.co.uk/uploads/1/3/1/6/131637362/5968222.pdfIn PDF document text
    • http://files.susanlane-gardenscapes.com/uploads/1/3/1/0/131070398/fapineliverigil_siroved_lugara.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/1/0430/4211/1637/files/birads_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/adjective_clause_lesson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7496/1059/files/catalizador_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3885/1751/files/online_web_file_to_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3234/5765/files/baxi_solo_2_pf_boiler_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7789/4293/files/totakesomutakudaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5533/0966/files/92654490998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7105/9608/files/central_park_guillaume_musso_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8876/4316/files/gaxeget.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3146/8951/files/bottle_capping_machine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7401/9740/files/tixosupemisabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0493/5835/files/fuxazunugogoxuwesosu.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 2

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_off00006a52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A52 5232 bytes
SHA-256: dc075b41972827601de89d16fc49435ab4585fafb2c6dcd97a4452c8a7019eec
font_01_sfnt_off00007c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C14 13804 bytes
SHA-256: 1351a6d1defcd7dc01546b2248f02e1901e43a1aedb04b50bccd2b29ef2ad3b5

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