Malicious PDF — malware analysis report

Static analysis result for SHA-256 67910c172fafe529…

MALICIOUS

PDF

43.9 KB Created: 2020-08-08 07:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 567c84318c3facd2ad7d24cd70c1ab86 SHA-1: 2d93455afeaf7c873b74ab171e27d380a91f0ef3 SHA-256: 67910c172fafe529a5c3dda77813e34c604b177ea97c3b1d04c4e44668f4cc3e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector URL associated with malicious activity. The document body and heuristics indicate a lure for users to click these links, likely leading to a phishing or malware download site. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=dcs%20plc%20difference%20pdf In PDF document text
    • http://kujorere.jeannetteross.com/uploads/1/3/1/3/131379730/510d00db6.pdfIn PDF document text
    • http://luzobaku.anncottrellfree.org/uploads/1/3/1/3/131380005/6e14e0.pdfIn PDF document text
    • http://files.gladetoptrailrun.com/uploads/1/3/0/7/130776735/2811127.pdfIn PDF document text
    • http://files.dragonchoirs.net/uploads/1/3/1/3/131383664/zefagiri-dowezomerilajor-valamolilim-gobekebunezifon.pdfIn PDF document text
    • http://files.keelancole.com/uploads/1/3/1/6/131637306/5437446.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/1/0434/7317/4693/files/basketball_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2623/6063/files/piragufepekigorewebugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/15662643203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7367/3118/files/dutigikigezibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2992/8872/files/pdf_to_dwg_online_without_email.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/82272796201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2821/6997/files/64595294181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0841/7192/files/dicks_sporting_good_coupon_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/vikobatajimevuzije.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_off00006fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD3 4936 bytes
SHA-256: adbf6fc08ce8ea115eae14f9eede6f9d5fe56fdf130e286b444b9c4f3972e3cf
font_01_sfnt_off000080b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B5 10116 bytes
SHA-256: 75cb0dde7e8e088bd3403f4ca2bc35ee301637f01f30988fe6a723754fd5335e

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