Malicious PDF — malware analysis report

Static analysis result for SHA-256 6730a2e4ad4849fd…

MALICIOUS

PDF

41.0 KB Created: 2020-08-08 05:28:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cd4c648d9113aa029edfc7ada24cae2 SHA-1: 6818939c7cca9827af22a81132e46337989f184f SHA-256: 6730a2e4ad4849fddacd4b1638ac09c72578c3de98cf0be2aa76866b3e1e5f84
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a redirector infrastructure known for malicious activity. The document body and heuristics indicate a lure for free PDF downloads, which likely leads to malicious content or further compromise. The ML classifier strongly supports the malicious verdict.

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=academic+writing+book+pdf+free+download In PDF document text
    • http://files.mairiwilson.com/uploads/1/3/1/8/131856071/bapenoladijudaj_pevit_gadogeza.pdfIn PDF document text
    • http://files.corvisierolaw.com/uploads/1/3/1/3/131383743/590d2457.pdfIn PDF document text
    • http://files.twerkoutbylynnea.com/uploads/1/3/0/7/130775393/bemin_fewasakakelub.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/1/0431/8740/4968/files/the_gaming_lemon_gta_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/18827549346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5371/9452/files/82285779827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/63276704677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/dikanubado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/5283212991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mojarugalemidim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1087/2728/files/python_alphabetize_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/push_files_to_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/gedupogusasugutubevofemix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5271/files/blacksmithing_levelling_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5388/files/82984335194.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 1

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_off000060be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BE 5584 bytes
SHA-256: 0b8c7d5dd96d935a944d9a411b8211683bf59f789784bd0417e7c157f76850c7
font_01_sfnt_off000073ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BA 10360 bytes
SHA-256: 8bbe25c3357b77f8d95a8681dd6b5304deccfee72975240d1ae6977c87c51136

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