Malicious PDF — malware analysis report

Static analysis result for SHA-256 79cdbf82501ed47f…

MALICIOUS

PDF

46.0 KB Created: 2020-08-04 21:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a43cd02256281da398a2c335eb7e5fb SHA-1: 74c786575bf745c498b6192853fb2183db658ed6 SHA-256: 79cdbf82501ed47fe1b4ffac507aef2325ec49a96059db6403aa6d2b538e730a
194 Risk Score

Malware Insights

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

This PDF document contains numerous links to external resources, masquerading as a download for 'Ansys workbench 18 pdf'. The primary link directs to a known malicious redirector infrastructure, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent 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.ru/pify?keyword=ansys+workbench+18+pdf In PDF document text
    • http://guguvuj.mathwithmichellemallahi.com/uploads/1/3/1/4/131438216/938773.pdfIn PDF document text
    • http://files.rentfloridahomes.com/uploads/1/3/1/4/131406288/8effca08.pdfIn PDF document text
    • http://files.mariebyrdsproul.com/uploads/1/3/0/8/130874598/6292840.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/1/0434/5161/3334/files/wofusekenelegebibilebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6245/9544/files/19129980887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/deontology_vs_teleology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/setimogizog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/35582356547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9986/5756/files/63723341352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7539/files/vofatifapetagume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/gasutifakukineviwuvade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2658/6532/files/rutarowes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4479/7606/files/pituxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/togodaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/17544821456.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_off000074ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AC 5632 bytes
SHA-256: fc4cb94ad6bc391b7753990e2a3d35d316a2ff12f0edda404e4b782dad356098
font_01_sfnt_off000087fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87FA 10404 bytes
SHA-256: f26ebbbe65b327e70d2eac1eabb49ebcb0a4a33e59f31cbcc8355e6f53daf01a

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