Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc38b6aaef487674…

MALICIOUS

PDF

44.7 KB Created: 2020-08-10 14:15:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c665aaca9c2ab28a5f80fc85a5087c78 SHA-1: 86f1d2df42f8860076ba0011707d834b6b646970 SHA-256: bc38b6aaef48767445f83c03ae3cac6a481b648a917cdb8e52f64256d1d46017
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, and one critical link to a known malicious redirector. This indicates a link farm or redirection strategy likely intended to distribute malware or conduct phishing. The ML classifier strongly supports the malicious verdict.

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=les+aliments+ferment%25C3%25A9s+traditionnels+pdf In PDF document text
    • http://josolalov.laurelheidtman.com/uploads/1/3/1/4/131407263/munafilezo_jumagen_gosix.pdfIn PDF document text
    • http://files.chapeltownfootclinic.co.uk/uploads/1/3/0/7/130740517/kanusadefa-defun-mikimowerenal-jidop.pdfIn PDF document text
    • http://files.makingwhatiwant.com/uploads/1/3/0/8/130813314/nabiluwigowavub_mesedaromodapuz.pdfIn PDF document text
    • http://feguwaze.procon-loe.ru/uploads/1/3/1/3/131384635/mujiluwusebo.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/1/0429/9191/1066/files/69735197683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2762/6134/files/25912827985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/4126837293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/mofajimejewulete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/medical_billing_ar_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/28514852328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7192/9496/files/tarjetas_auriculoterapia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4676/8535/files/catalogo_eudora_ciclo_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/banen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/biochemistry_carbohydrates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/43914535054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7296/2203/files/mabanovaf.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 6

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_off00006bff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFF 5268 bytes
SHA-256: d251227b2e41955606c401c52f7afe576af153691b5f189dadf3fa5cfb68c841
font_01_sfnt_off00007d8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8C 12120 bytes
SHA-256: e15a599ddd31801c165c59ac6242ab8420875754dbe786233533a458deb279bf

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