Malicious PDF — malware analysis report

Static analysis result for SHA-256 8874d41bdb155668…

MALICIOUS

PDF

51.3 KB Created: 2020-07-29 03:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73c92e001c2b563029a078d881f5799d SHA-1: 7001adfb163b5d14f82f29c57840fbd899f7b33b SHA-256: 8874d41bdb1556688fcfd9f619cfbd82c23cdd05b2a7242a77f260629ca4b7f3
194 Risk Score

Malware Insights

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

The PDF contains numerous links to SEO-optimized redirectors, including one specifically mentioning 'statistical analysis microsoft excel 2016 pdf', suggesting a phishing or malware distribution lure. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating an attempt to drive traffic to potentially harmful content. While no scripts were extracted, the structure and embedded URLs strongly suggest a phishing or malware delivery mechanism.

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=statistical+analysis+microsoft+excel+2016+pdf In PDF document text
    • http://files.blue-river-vermont.com/uploads/1/3/2/7/132712116/513f61d10de22.pdfIn PDF document text
    • http://files.harbottlehughes.com/uploads/1/3/1/4/131452887/2348445cbe19.pdfIn PDF document text
    • http://files.premiermbprops.com/uploads/1/3/0/7/130775231/4819371.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/1/0434/9935/6324/files/75898539088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/nozivajutezuxumejaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2858/6402/files/firevijofefofadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27347714529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/wonavabeserajozegifawodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0310/7752/files/41548494208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/32589151993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0595/0626/files/kofapexojusite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/zavojirulagen.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_off0000892b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x892B 5840 bytes
SHA-256: 045f10cb4ac25eda899ed2ce4b20a13112d9816d92ccac8182af125155b63170
font_01_sfnt_off00009cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CEA 10328 bytes
SHA-256: 7e192a110bf7d54803df11fe4a6d314f56f1720d4a6ec098dde6c3bae80dbc4e

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