Malicious PDF — malware analysis report

Static analysis result for SHA-256 3375ff6d763a012b…

MALICIOUS

PDF

33.8 KB Created: 2020-08-04 22:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5852fdaf25a552edff91195fbded74c SHA-1: 388bdc0425db88bbb78e9283743435f44f88d5b8 SHA-256: 3375ff6d763a012b9c643f81007395ebbf5c71749b1c5af5e95791e2b87f5a10
194 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a free PDF to Word converter, which redirects to a known malicious infrastructure. The document body and embedded link text reinforce this lure. The presence of numerous embedded links, many pointing to Shopify domains, suggests a link farm or SEO manipulation tactic to increase visibility. The ML classifier strongly indicates maliciousness.

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=cambiar+de+pdf+a+word+gratis In PDF document text
    • http://files.carolinepakel.com/uploads/1/3/1/3/131398094/8583998.pdfIn PDF document text
    • http://fewitaxu.unimark.hu/uploads/1/3/1/4/131406592/fotepaw-kegevobudojalab.pdfIn PDF document text
    • http://files.concretebendoregon.net/uploads/1/3/1/3/131384573/e9c002504.pdfIn PDF document text
    • http://files.cindyconnerscoaching.com/uploads/1/3/1/4/131407010/8856841.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/1/0431/5598/0439/files/vuzoloman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/69307802376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/11797635866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6972/6110/files/87880277968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4876/2529/files/acca_f3_revision_kit_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74832969368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/guzazolavazujap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/daisy_powerline_426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1341/2760/files/borisasowibavuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0723/8567/files/talewibazidadanav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/54453835733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/ferigozijulubegup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/fobujiliwufosobekutojupa.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_off000047ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47EC 5464 bytes
SHA-256: 47edf197f1c99d564951abaa836418ac76007774d428fed5d666cfa7dc072129
font_01_sfnt_off00005a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A72 9372 bytes
SHA-256: e0fabdf1d9f2403e69b8b5898134e195eae14db5640bcbbd696b5618b2fc08d2

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