Malicious PDF — malware analysis report

Static analysis result for SHA-256 85ba807d8ae672c6…

MALICIOUS

PDF

39.9 KB Created: 2020-08-09 06:00:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0344feccb4e2f0fc6faf80e3c95ff1cc SHA-1: 74bb6b65db93c5646bcf0016929b4a4dbdbf7097 SHA-256: 85ba807d8ae672c6d465c191b177cd40eb68ee6cd6b2f3f761e56e31ff3d3175
194 Risk Score

Malware Insights

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

This PDF document functions as a link farm, employing SEO tactics to lure users with promises of free downloads. The primary malicious link, https://ttraff.cc/pify?keyword=relative+clauses+exercises+and+solutions+pdf, redirects to potentially harmful content. The document's structure and embedded links strongly suggest a phishing or scam attempt, likely intended to distribute further malware or harvest credentials.

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=relative+clauses+exercises+and+solutions+pdf In PDF document text
    • http://files.biodiversitymarine.com/uploads/1/3/0/7/130776058/fojarikazota.pdfIn PDF document text
    • http://files.pack911ws.org/uploads/1/3/0/9/130969659/wutegofuwaxizom.pdfIn PDF document text
    • http://pafexij.mauriziobongiovanni.com/uploads/1/3/2/6/132681352/fexidimetavizu-pixekalulajer-vufulizaza.pdfIn PDF document text
    • http://files.haverhillauthenticsicilian.com/uploads/1/3/1/3/131380771/denuxideru_nifixa_bafepadamofuw_fiduze.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/1/0432/2885/6477/files/85568755295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/metabolism_of_proteins_biochemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/rapixob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6661/4175/files/track_phone_number_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4567/5420/files/64513749541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/the_apocryphal_books_of_the_new_testament.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/pegegetitukira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7113/4106/files/bavuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5883/7142/files/new_holland_ls170_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4166/6710/files/embo_impact_factor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11411440246.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 6

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_off00005d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D25 5284 bytes
SHA-256: 5ab3d4d1e6b1a399918eeeaa38004052874feb4a2213ecdf6bafd1bd9238e961
font_01_sfnt_off00006f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3A 10316 bytes
SHA-256: 88798144bd183724a990ac9c62e4d04a8bcfb5f697fd70de504ed055218a4aea

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