Malicious PDF — malware analysis report

Static analysis result for SHA-256 17858cb460589e99…

MALICIOUS

PDF

41.3 KB Created: 2020-08-04 03:21:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73d68a0b323a6217f0997fe97e70b761 SHA-1: 79938c516e68b90596ecfc2a75956c2debdd6873 SHA-256: 17858cb460589e993f3f55bf4a81a37591d56e92ff09c12a9d4e092b654a4ab2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to appear as a mall directory, but they redirect to malicious infrastructure, specifically identified as a redirector. The document leverages SEO tactics to distribute these links, aiming to trick users into clicking through to potentially harmful content. The ML classifier strongly indicated maliciousness, supporting the observed redirection and link farm behavior.

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=annapolis+mall+directory+pdf In PDF document text
    • http://files.mylifesaparody.com/uploads/1/3/1/0/131069934/f2e8f3f43ea327.pdfIn PDF document text
    • http://files.needavac.com/uploads/1/3/1/4/131409761/guvusividexifet-lowalosim-papubusiw.pdfIn PDF document text
    • http://files.realabstractart.com/uploads/1/3/1/4/131438804/lozapexanirola.pdfIn PDF document text
    • http://files.fpcrc.org/uploads/1/3/2/6/132695244/vivovato.pdfIn PDF document text
    • http://files.chocolatiermatisse.com/uploads/1/3/1/4/131453907/vunafuwugela_guzutajeni_jilaxegom_rukofere.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/1/0429/2175/4787/files/liwadaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8938/7939/files/peguwiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5258/9465/files/16326050781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/environmental_science_merit_badge_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3323/0488/files/heaviside_function_matlab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/fikisod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/xojevazokuzinawotopim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6777/6919/files/wijilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/ncert_binomial_theorem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2139/3320/files/21988549242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7668/1882/files/62990144693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2417/7576/files/xakemalebig.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_off000061cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CC 5392 bytes
SHA-256: af6dff4eabe58613b230663d3a6d557c8bcf5acd487dd86c1b3bce8dd9ac1646
font_01_sfnt_off00007417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7417 10652 bytes
SHA-256: 86ddbee9501f510abf90d9703c61d6e0d393dbe8d6e93c0d2cb4f4687212ec3d

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