Malicious PDF — malware analysis report

Static analysis result for SHA-256 1366a53e448a5995…

MALICIOUS

PDF

40.4 KB Created: 2020-08-15 23:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db25ccd573017e1f4504442a960f8dd2 SHA-1: f4baa3e369b427bdd7c02a5b42f34d0f5c04c712 SHA-256: 1366a53e448a5995b7462d98d07a520ce84b6ec931991606cb777106651e06ed
194 Risk Score

Malware Insights

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

The PDF contains a link farm and redirects to a known malicious URL, suggesting a phishing or scam attempt. The embedded content, though obfuscated, includes the malicious redirector URL and numerous other PDF links, likely for SEO manipulation or to host further malicious content. 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/wb?keyword=shimadzu%20uv-1800%20spectrophotometer%20manual In PDF document text
    • http://files.holisticblendssoap.com/uploads/1/3/1/4/131453574/7b8cbc5.pdfIn PDF document text
    • http://files.unfiltered-anastasia.com/uploads/1/3/1/4/131453633/6563354.pdfIn PDF document text
    • http://files.transformationalbodyworkniagara.com/uploads/1/3/2/6/132682293/seronazurawibosazope.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/1/0429/1218/6531/files/baal_veer_2_mp4_3gp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6187/0746/files/30082354235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9348/1885/files/lafalekimol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/jegojuwegigepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2173/7882/files/62632873166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/kaguriwevemelidovudolupib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/catholic_church_history_timeline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4551/9513/files/bugupepanezuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1326/6846/files/2192794337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0441/8459/files/nanedevipipoxawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1279/2225/files/verbe_etre_et_avoir_au_futur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3658/0759/files/wilosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1981/1490/files/top_500_companies_in_south_africa.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 5

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_off00005db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB5 5944 bytes
SHA-256: 7a3844c7a4be6c7183f584b5c3af7be9a55da339863153a1a5cfb4d362baa41d
font_01_sfnt_off000071d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D8 10408 bytes
SHA-256: 250d0d4ecffd9af2af073eb1b5b63cebf38b18413688e5bdaf7c17feb657f15e

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