Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e78738733c474f6…

MALICIOUS

PDF

42.5 KB Created: 2020-08-06 11:50:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87be08fe4bce9e397405bc99c0f51fc9 SHA-1: 9a30dd9f3d038e6f7763eabcf73e0fbaf7a3db7e SHA-256: 6e78738733c474f6e13e819521d60393132ecb2cd1ac18c79f2d02a5e85ccb73
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate PDF downloads, but the primary link redirects to a malicious redirector. This suggests a phishing or scam attempt, likely using the document as a lure to drive traffic to malicious infrastructure. 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=epilepsy+and+the+functional+anatomy+of+the+human+brain+pdf In PDF document text
    • http://files.seasonsheart.com/uploads/1/3/1/3/131381900/2630337.pdfIn PDF document text
    • http://xulit.poisonivy-designs.com/uploads/1/3/1/0/131070450/6427808.pdfIn PDF document text
    • http://files.scribbledscratch.com/uploads/1/3/1/8/131856071/3861211.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/1/0437/6713/6413/files/23469995639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/92353617792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3637/6214/files/temolibokivimabuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7283/8039/files/lalixonulex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3749/1357/files/wagolodosapofiwedulabaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/1742439043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/unisa_application_form_2020_second_semester.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/iteration_of_rational_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0622/0712/files/adventure_time_season_8_episode_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/xaxujujigudopas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9432/7975/files/siwodamewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6408/2073/files/wasoweworites.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_off000068a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A7 5596 bytes
SHA-256: 0fcca3fbf6312700b47c5a1c158e59b947fdbc502ff63e4c67aa0a359c9895c3
font_01_sfnt_off00007b83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B83 9764 bytes
SHA-256: 9afcc814371cfbb76bfb9a7c65c453da809fd49713036311180fa71daba53c9e

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