Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f495310490ee421…

MALICIOUS

PDF

49.1 KB Created: 2020-08-14 02:47:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 68f72d64cc6a64b900ab6dc70f97ae05 SHA-1: 6b484180af7c86e5ad3c3bfcb12d0eb950c593b1 SHA-256: 6f495310490ee4212cc7736598ddfe0eca7a7a319ba92429c49bac9fa5c9f945
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs that lead to external resources supports the attack pattern. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful content.

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/wb?keyword=principios%20de%20etica%20medica%20pdf In PDF document text
    • http://gigobu.southrichmondadcc.org/uploads/1/3/0/9/130969060/dirok.pdfIn PDF document text
    • http://jelukoden.michaelbradleyatty.com/uploads/1/3/1/8/131856887/ruseb.pdfIn PDF document text
    • http://files.thesiftertv.com/uploads/1/3/1/6/131637889/812921d0307.pdfIn PDF document text
    • http://files.coquelicothandmade.com/uploads/1/3/0/9/130968984/55250316736c6.pdfIn PDF document text
    • http://files.palmgrovemennonitechurch.com/uploads/1/3/1/3/131381067/lirizufufon.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/1/0433/0553/3598/files/ewon_cosy_131_installation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/tenoxaburazowuxolodatab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/majoloxetugugidini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2806/9017/files/rrb_alp_cbt_2_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/rofiwifadaxamima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/jugamisavaroxepunowoxadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/mvc_design_pattern_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2566/0066/files/45305665014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45484104345.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 4

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_off00007e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E01 5272 bytes
SHA-256: 71cabbbc76e69eb4e2a28926d995cc061256a14072e23e7afb9aa207a904118e
font_01_sfnt_off00008fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FCB 11792 bytes
SHA-256: ed61e174f1c57e9358a0a2f9e5cbf62ea0d366959c0985387bfb28ece05f4e79

Open this report in the interactive analyzer, or submit your own file for analysis.