Malicious PDF — malware analysis report

Static analysis result for SHA-256 775962d8027f81c3…

MALICIOUS

PDF

38.6 KB Created: 2020-08-16 17:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f06f5a6aa2adbc80fa739fdf60efa7ed SHA-1: fcedc57e42328023dfa758c1924750f457750b77 SHA-256: 775962d8027f81c3478424c6653d9048880796701b79adbc70113921c26f9214
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially obfuscated, includes the primary redirector URL and references to other PDFs hosted on various domains, suggesting a link farm or content distribution network for malicious payloads. The ML classifier strongly indicates maliciousness.

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/pify?keyword=treatment+for+boutonniere+deformity In PDF document text
    • http://files.investigations-intelligence.com/uploads/1/3/0/7/130775658/fdd59af9ca5b.pdfIn PDF document text
    • http://vosadijez.ellenaltcommunity.com/uploads/1/3/1/3/131398140/6057087.pdfIn PDF document text
    • http://files.savingtherealragemonster.com/uploads/1/3/1/4/131437017/20260670df69.pdfIn PDF document text
    • http://gugeja.aquilladesigncompany.com/uploads/1/3/2/3/132303027/jebisaforuxixu.pdfIn PDF document text
    • http://files.carrolltonny.org/uploads/1/3/1/6/131607683/lunovulaxaforip_kavodokinuri.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/1/0438/6439/1845/files/92331988798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3467/3301/files/45781650267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/alicia_keys_if_i_ain_t_got_you.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5467/6645/files/63599808400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/71103001705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5656/1319/files/41746559382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5254/3649/files/idylis_416709_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/bupisutud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/arquitectura_maya.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 3

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_off00005a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A97 5032 bytes
SHA-256: 286cf896f20e722b8d707268fd3dc30d5a9fbb7cee403007c2bef0e764221148
font_01_sfnt_off00006ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA5 10012 bytes
SHA-256: c48dc5bf3784ed79e126d9cfe0512eaafbcd59b33f4f530e72a616d2b3f13ea1

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