Malicious PDF — malware analysis report

Static analysis result for SHA-256 4354ebb35ae29b8e…

MALICIOUS

PDF

43.7 KB Created: 2020-08-04 11:35:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96ee4f59861c8aa30239da06b59f8697 SHA-1: 54ac44a71144f7ca1da2cdcbaf4ee21d447f3ff8 SHA-256: 4354ebb35ae29b8e1fe77d0a699cdd6c1a86c47249b686471111653648561db4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with many links pointing to benign Shopify domains but one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. This indicates a lure to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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=components+of+boiler+system+pdf In PDF document text
    • http://files.headtotoeoldschool.com/uploads/1/3/1/1/131163957/d5410eae4.pdfIn PDF document text
    • http://files.uspw.net/uploads/1/3/0/8/130814874/nesuzus.pdfIn PDF document text
    • http://files.filmbandits.org/uploads/1/3/1/1/131164402/635f9.pdfIn PDF document text
    • http://files.heartstonehavenmassage.com/uploads/1/3/1/6/131606060/penuk.pdfIn PDF document text
    • http://files.calmundertension.com/uploads/1/3/1/3/131381722/jovuruke.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/1/0432/4573/2007/files/dejikafevilopaxawukonewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/xigerenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/pobodoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2831/6313/files/zavatavasabuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7077/4679/files/30902157240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/sql_database_management_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0857/9993/files/3442956654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1158/7752/files/naniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2516/9565/files/lusukigixikeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2494/9153/files/jezubifopuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/kogakiwer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/wugifewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/viter.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_off00006db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB3 5124 bytes
SHA-256: d681b1979fec85ffa1b6b0b0a72da41c458f96ff56324505e5a4bb42ee17dbe9
font_01_sfnt_off00007f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F08 10268 bytes
SHA-256: a0eadb410a00d2e27274b893cebfbd8eda340a21b9aa73a1f3800161a024ac5c

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