Malicious PDF — malware analysis report

Static analysis result for SHA-256 335c2aba2d366f7a…

MALICIOUS

PDF

50.3 KB Created: 2020-07-30 15:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c0e00098513589c152a865774a4d3ac SHA-1: 005b3cbc25fbd9eaee036b3954e660007d4b465c SHA-256: 335c2aba2d366f7a3c68f6698e21f81ce35ac5455afb6e57541f999e098d8866
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with the primary heuristic identifying a malicious redirector. The document body is heavily obfuscated, but the presence of numerous external links, including one pointing to a known malicious redirector, strongly suggests a phishing or redirection attack. The file's purpose is to drive traffic to malicious infrastructure.

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=cantico+dei+cantici+pdf In PDF document text
    • http://files.weddingcakesbysharon.com/uploads/1/3/1/3/131381464/rufidazow.pdfIn PDF document text
    • http://files.rsojournal.com/uploads/1/3/1/8/131872096/5873310.pdfIn PDF document text
    • http://files.lakehamiltonbaptistchurch.org/uploads/1/3/0/9/130969967/2639348.pdfIn PDF document text
    • http://files.drrichardsonsnfp.org/uploads/1/3/1/3/131380469/8283429.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/1/0436/9648/8613/files/58526170469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9194/1781/files/topopuxofotoxafujopeguju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/32668972986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1695/3751/files/tilipisajuxupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9716/9824/files/pikasorogida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/kojevijejujalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4505/9749/files/xidiruvex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9597/3276/files/doremapuledawakupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31082235151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/madegaboguzugebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/xakizududovabusoju.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_off000081e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E5 4652 bytes
SHA-256: 64d07a82dba3d108d1ee402d7366d34c1db288544a3def469a0439dcbe1d08db
font_01_sfnt_off000091c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91C8 13112 bytes
SHA-256: 6a8cb36aaf772d21f233ebd8b5f79e0eb8342710bfd4f5dc75b5773c44bd6e8a

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