Malicious PDF — malware analysis report

Static analysis result for SHA-256 7954a4b5d23010c5…

MALICIOUS

PDF

42.0 KB Created: 2020-08-15 00:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6739c22bb3615f4a5c16ffb5829ffecc SHA-1: fa5c4898f521a5b45a59a08651451a7a7de1aa00 SHA-256: 7954a4b5d23010c53defa65065a31a955e69c91d6c5c8d969ccd8216eb5bae06
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed to appear as a job application lure. The ML classifier strongly indicates maliciousness, and the PDF structure suggests it's part of a link farm intended for SEO manipulation to distribute malicious content. The presence of embedded URLs and the redirection behavior point towards a phishing or scam attempt.

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=registered+nurse+cover+letter+template In PDF document text
    • http://files.huntsbrangus.com/uploads/1/3/2/6/132681507/zejuwav-mutogikuz-jogus.pdfIn PDF document text
    • http://gisosar.christineleakeymusic.com/uploads/1/3/2/3/132302720/3062987.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/1/0431/5057/3719/files/nugofedofaxerajodap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0905/6668/files/metabolismo_de_lipidos_bioquimica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3051/1779/files/zaladafino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4363/2805/files/walmart_cashier_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2797/1741/files/vafat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/zixababewasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1435/7145/files/281766736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasidobedibugamis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1614/3526/files/business_email_writing_activities.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 2

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_off000065c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C3 5460 bytes
SHA-256: 2a727545e2ff4138aaeed9dace7deb4e53923309019d12c9e49f20fdacf788dc
font_01_sfnt_off00007841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7841 10424 bytes
SHA-256: df3fc87d991306273c15703d9d49e121d07c6610b72ab7cec8c0ad4c469a6f3b

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