Malicious PDF — malware analysis report

Static analysis result for SHA-256 86e28b40aa04c591…

MALICIOUS

PDF

40.6 KB Created: 2020-08-02 21:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e1263892735d7de3d59ff76b60e99a9a SHA-1: d6f21c0774c46ed81cbbc05040546ddea6f161dd SHA-256: 86e28b40aa04c591534b13855ad0cb9b6a6c1bf4e075426a8455e9954b77f2c6
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure. The ML classifier and heuristics strongly indicate malicious intent, likely to direct users to phishing sites or download further malware. The document body text, though partially obfuscated, includes the primary redirector URL and references to other PDF files, reinforcing the link farm and redirector attack pattern.

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=but+it+is+not+this+day+meme In PDF document text
    • http://files.divreitorahofvien.com/uploads/1/3/0/9/130969831/dewimo_vuranafitumapop.pdfIn PDF document text
    • http://files.jgcsalesclinics.com/uploads/1/3/2/3/132302924/0c53db.pdfIn PDF document text
    • http://files.firelightdesigns.net/uploads/1/3/0/7/130775747/tobubugumilev.pdfIn PDF document text
    • http://files.kiefferphotography.com/uploads/1/3/2/7/132740852/196e24.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/1/0440/0067/3950/files/95061009531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/dakezoxupotugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3313/2193/files/zavojonukorux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lunizededalusabunis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1089/1680/files/3884135503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9776/7592/files/31470103917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4409/1557/files/32135466940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1151/2232/files/mevuxikufekasox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/25621988427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9207/3895/files/coffee_break_french_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5487/2214/files/8231978083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6924/2534/files/39123869600.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 8

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_off00006168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6168 5088 bytes
SHA-256: a6e69823569ae705822e0157637aad053e3044fdda84b591c1d293c014945e72
font_01_sfnt_off0000729b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x729B 10456 bytes
SHA-256: 004f64bf5414eb690991ea34cd38da81ff94ed48ade40d20ef48e99807512dbe

Open this report in the interactive analyzer, or submit your own file for analysis.