Malicious PDF — malware analysis report

Static analysis result for SHA-256 85bba0acf94041c4…

MALICIOUS

PDF

49.3 KB Created: 2020-07-28 12:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 067fe6eb657371f88b5b5cd30f728ed8 SHA-1: 1ccc1016d7baa04b1538618e017b4c5e49039d1b SHA-256: 85bba0acf94041c4e533b8aeb9fa1ecf25f29b4c44a544bdff63479e22e8b270
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to appear as free downloads, but they redirect to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a clear intent to lure users to harmful sites. While no scripts were extracted, the embedded URLs and the ML classifier strongly suggest malicious activity, 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.cc/pify?keyword=cancer+de+pulmon+definicion+pdf In PDF document text
    • http://files.cedartreeproject.com/uploads/1/3/0/7/130738704/vidurilim-lowopow.pdfIn PDF document text
    • http://files.elljaydesign.com/uploads/1/3/1/3/131380771/2023585.pdfIn PDF document text
    • http://files.riccijustisart.com/uploads/1/3/1/3/131384281/sasavukug-pabeba-xoropozoxaxog-getirakud.pdfIn PDF document text
    • http://files.semmuna.org/uploads/1/3/1/0/131070526/vugegox_milenorener_mufize_dagejelelexa.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/1/0430/9811/2167/files/vulujodefabogozataki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buwukepenarunowara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9063/1064/files/77832769939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/pomoxorukinaforidefelun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/16478280432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/35821136024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/37188369903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/46327043170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/4109542898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4573/2007/files/pagitekenomivazodokesan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/30715534983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6302/4542/files/vewixokivatuw.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 7

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_off00008434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8434 4948 bytes
SHA-256: 66c8e6ced3560f31e29118fdc13eaa8cca856eb07da777e84f29cc2ac96e4c02
font_01_sfnt_off000094ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94EA 10328 bytes
SHA-256: fdd74495e4b662c8fcf4287009f11070107fd06d7e9b1a852c24a118a46421d0

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