Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d6307a60d84b59…

MALICIOUS

PDF

42.5 KB Created: 2020-08-10 04:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d23ea6f246119ec74b5cecfe09182ba7 SHA-1: dd8498a8b52834938fc3fb7e487190c7437c915a SHA-256: 82d6307a60d84b5993f3dd836529559ddea209c7581909a448490ba442502376
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to SEO-optimized PDF download pages, with one prominent link redirecting to known malicious infrastructure. The document body and embedded URLs suggest a phishing lure, likely attempting to trick users into downloading further malicious content or visiting compromised sites. The ML classifier strongly indicated 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.ru/pify?keyword=les+articles+definis+indefinis+et+partitifs+pdf In PDF document text
    • http://files.douglasshaunephotography.com/uploads/1/3/1/0/131069860/c3c86af13554.pdfIn PDF document text
    • http://files.kubeimport.com/uploads/1/3/0/8/130874009/guraxutefuzujes.pdfIn PDF document text
    • http://files.earthwisdominstitute.org/uploads/1/3/0/7/130739570/2893334.pdfIn PDF document text
    • http://jevezen.akomaarts.org/uploads/1/3/2/6/132695818/3584b195c07154e.pdfIn PDF document text
    • http://files.writingmyownfate.blog/uploads/1/3/1/6/131606875/zazazora.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/1/0430/6498/3701/files/alejandro_dumas_libros_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/6789944451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/magemitoxuvepesosuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/descargar_fisco_agenda_2020_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/albacea_peru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/likadofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/pufumaxoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/7914391360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3681/9104/files/futiwapajovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/72462904176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/blood_type_o_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7293/8399/files/definition_of_conflict.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 4

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_off000063e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E8 5092 bytes
SHA-256: cf43daf2dab2d453656c6afc4efb2438edb8e46051df66c66e508c27d838860d
font_01_sfnt_off0000754b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754B 12088 bytes
SHA-256: 0c6e25da54ec8ac6319284736f72e1d343b77d7338dc29736592bc5bcde9cb92

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