Malicious PDF — malware analysis report

Static analysis result for SHA-256 94df9a4b9985a751…

MALICIOUS

PDF

58.9 KB Created: 2020-07-27 15:58:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b66de91d74de5dc2142308052b69a416 SHA-1: a71b98674b9d10cdfaae157f2921b848167fae3b SHA-256: 94df9a4b9985a75170e2f88552ae54c0886a555635d0fe3dafdbea0314a04a78
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with the primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'best ppt format for project presentation'. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or redirection attempt. No scripts were extracted from this sample.

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=best+ppt+format+for+project+presentation In PDF document text
    • http://files.mooreenvironmental.eu/uploads/1/3/2/6/132682882/5fac917a5126f.pdfIn PDF document text
    • http://files.olympicmountaincloggers.com/uploads/1/3/1/6/131636841/9032662.pdfIn PDF document text
    • http://files.keverse.com/uploads/1/3/2/3/132303269/cebb1f79baad2.pdfIn PDF document text
    • http://files.mayotravellerssupportgroup.com/uploads/1/3/1/4/131407051/5264802.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/1/0428/0814/8127/files/17088868835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dedijadexurusefux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/delexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/zaxupolajuxaledudedobaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/46941810388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/20689444963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6131/2676/files/jinuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/98997078603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/96978685093.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 6

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_off0000aa71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA71 5044 bytes
SHA-256: 780aa5e96774a82fdb25045c7e5ebd7c66dc91914b3dba6c55394cfb9edb7eaa
font_01_sfnt_off0000bb7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB7E 10184 bytes
SHA-256: 81bd3fcae8517752c849db4131cc126b0d8e5b9e5e30c472b2c2aab8fcceb44e

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