Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e4ffeeba64a47f…

MALICIOUS

PDF

43.6 KB Created: 2020-08-18 13:56:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 911b8c891b9381b7b0ab441cafadcba5 SHA-1: 0ab3619b52f3d2b06bfb89e133fb745c8e077f6b SHA-256: 01e4ffeeba64a47fc5a008a2328cd40e8d20694554e81983f16c3d9d66f523cb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to mimic legitimate document downloads. One prominent link, 'https://ttraff.ru/pify?keyword=zebrafish+brain+atlas+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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=zebrafish+brain+atlas+pdf In PDF document text
    • http://files.ncscja.org/uploads/1/3/2/6/132681560/xesavuweso.pdfIn PDF document text
    • http://files.natureandhealthyliving.com/uploads/1/3/0/9/130969372/megulanodiw.pdfIn PDF document text
    • http://files.soclumsyinheels.com/uploads/1/3/1/3/131380845/b2950.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/1/0430/2562/9335/files/rapenikuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/73017438905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1835/7669/files/importance_of_building_rapport_with_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2541/5843/files/elementary_differential_equations_10th_edition_boyce.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/12974285461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/tomoxodaboseginunef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9495/0556/files/67058040023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6827/7415/files/gebelulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0099/5741/files/87521256862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9002/7430/files/african_belief_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/74329729479.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_off00006bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF5 5224 bytes
SHA-256: 6aac475682bdfb55f4a7b992267d0e91ff16314b8118ed39edcd49309324d1f6
font_01_sfnt_off00007dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAC 11208 bytes
SHA-256: f746b906ad3b307acf560caf34b53f779013ab23c9f79e1c8ee9719f391bc9e9

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