Malicious PDF — malware analysis report

Static analysis result for SHA-256 599459c334a52259…

MALICIOUS

PDF

39.1 KB Created: 2020-08-07 03:14:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f3027409a15ccd19180d4b2019248ec SHA-1: 6c9c178f2a44394f91f159717841002c3b7266df SHA-256: 599459c334a52259209ed89f0ac492a429a4f3a0db4afbc249137cbb5f77f194
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic suggests a tactic to manipulate search engine results or distribute content. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=new+headway+beginner+student+s+book+fourth+edition+pdf+gratis In PDF document text
    • http://files.amazonindoorplayground.com/uploads/1/3/1/6/131606256/d5178b7720a87.pdfIn PDF document text
    • http://gifiroli.plantgrowthchambers.com/uploads/1/3/1/4/131438641/xujilarune_tusinebile.pdfIn PDF document text
    • http://files.fireecologyandbiodiversity.com/uploads/1/3/2/6/132695805/90cd4277.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/1/0431/7852/4832/files/pilixirukokux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/cisco_company_profile_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/datizofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5767/5421/files/konuzajazutefateran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/80172398541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1592/7965/files/pijufetud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/62086273246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7162/5634/files/fifutusefukobevoloza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/toxaxivasobovovud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8600/2843/files/tidesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0709/9558/files/kogulupisej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0412/3557/files/architecting_data_lakes_download.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 5

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_off0000589d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x589D 5640 bytes
SHA-256: 30c1b05dd1f0408fae287dce239b864cfa3091082eb024a5d79dd9c676d8355c
font_01_sfnt_off00006be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE7 10288 bytes
SHA-256: c1063b9709ef3e038576278e9adcce10278b6057fc827947eabf50b856292fc8

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