Malicious PDF — malware analysis report

Static analysis result for SHA-256 74be729ac3023613…

MALICIOUS

PDF

41.6 KB Created: 2020-09-17 06:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00d1cfed8b060ee527d589187c1bc3dd SHA-1: a1529b1707e9aa4786c45a45c22968ea15cc0cd7 SHA-256: 74be729ac30236136278b425c00d2318cbea88e9544acf5c40637a4f890bd197
194 Risk Score

Malware Insights

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

This PDF file was generated by wkhtmltopdf and contains numerous embedded links. Several of these links point to known malicious redirector infrastructure, specifically 'ttraff.com', and a large number of other PDF files hosted on various domains. The ML classifier strongly indicated maliciousness, and the presence of redirector links suggests an attempt to lead the user to a malicious site, likely for phishing or malware delivery. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.com/wix?keyword=xdm+guide+rod+wear In PDF document text
    • http://files.marryingbipolar.com/uploads/1/3/0/9/130969758/3592398.pdfIn PDF document text
    • http://files.accfinsoftware.com/uploads/1/3/1/4/131482907/415182.pdfIn PDF document text
    • http://kuruveg.morebeetsplease.com/uploads/1/3/2/8/132815828/56425a3c53c50.pdfIn PDF document text
    • http://files.eytspartans.org/uploads/1/3/2/8/132814996/fusakupafogureb_rosama_somufivijaso.pdfIn PDF document text
    • http://files.bristol.co.nz/uploads/1/3/0/7/130775728/2055644.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/1/0434/5767/5421/files/hyrule_warriors_wiki_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/vasefemoritufasixutifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9292/9437/files/xojapobekule.pdfIn PDF document text
    • https://6b86eb0d-40a6-4650-ad95-9c06ac74fd8e.filesusr.com/ugd/d216cb_38bb6753f7f84f379de7d504b410fbb5.pdf?index=trueIn PDF document text
    • https://49eed056-1ffe-4e99-aa88-e6ddad566939.filesusr.com/ugd/c068f8_82e7a2271f204ae7a8f73d1bd40a4d93.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8119/5680/files/62129436084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6645/7254/files/betternet_premium_apk_pc.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_off000061e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E9 5004 bytes
SHA-256: 292e4cc9bd7973a7308c076a1a00d63a5315290d6a94046ad3d24db7c02e1483
font_01_sfnt_off000072e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E5 11152 bytes
SHA-256: bec298463306d1a5e4bd6a04273167735f8e7794cceb181b86b7c6b019b882c7

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