Malicious PDF — malware analysis report

Static analysis result for SHA-256 e083a8242e4633e3…

MALICIOUS

PDF

44.2 KB Created: 2020-08-15 21:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e2c8cbca2e7fcca9a5a91bfbf1e231d7 SHA-1: 46dc3ed623b2de0007d92b7f9e1ec64e4cfd9874 SHA-256: e083a8242e4633e3126e7e98dd9fa0ceba8a384e0c9e37ea290a05e4d7260a17
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the target URL, suggesting the user is intended to click this link. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=depuy%20expedium%20verse%20pdf In PDF document text
    • http://files.debraheschl.com/uploads/1/3/2/6/132680901/dibigim-nuratuni.pdfIn PDF document text
    • http://files.vinnysblogbookcom.com/uploads/1/3/1/4/131438353/827608.pdfIn PDF document text
    • http://files.jacquelineshiffman.com/uploads/1/3/1/1/131164456/8485088.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/1/0435/4686/9911/files/82044296166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/fixasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/75628279528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4429/5076/files/pneumatic_cylinder_working_principle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/fazimuzovubux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/html_blank_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/16205416576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7881/9735/files/95671143636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/kindle_paperwhite_frozen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/woluxibajilafegadusan.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_off00006dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD3 5172 bytes
SHA-256: 0b567db21ccf06452f5cdb4dead99fef87abdea236d4eceda6ce1d7b83c67094
font_01_sfnt_off00007f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F69 10988 bytes
SHA-256: d5c1cb26710384b37f6741d44191b91d0f324f122a02577db3c0c8e85697d718

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