Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca392304cad23112…

MALICIOUS

PDF

68.6 KB Created: 2020-08-09 20:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e33038c847b70884e6b35c232f88f61a SHA-1: dab4803436166a496edb7ae8aab8f38613003904 SHA-256: ca392304cad23112f9dfd4e2c1e4adfec91e487c217318f00d3385b7db55dad0
194 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a significant number of embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm strategy. This suggests the primary goal is to lure users to external malicious sites.

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=brick+bonding+patterns+pdf In PDF document text
    • http://files.ryanshay.org/uploads/1/3/1/8/131859261/jopulekenuw_mabisefamaxuza_nawirovoxemi.pdfIn PDF document text
    • http://files.mfautodetail.com/uploads/1/3/1/4/131453902/7721858.pdfIn PDF document text
    • http://files.wakefieldhockey.com/uploads/1/3/0/7/130738821/9a1a7d30c.pdfIn PDF document text
    • http://files.holisticjoy.ca/uploads/1/3/1/4/131437515/jogik-zetasawabesuxun-bimekufafidog-vejosuzigedixax.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/1/0430/9948/8410/files/gepevelanilamulegadoxote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/bridge_to_terabithia_vocabulary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6117/2631/files/tiwitodizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5714/3199/files/pevudalikiwezuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7949/7896/files/tijugokubixisuwedopepiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/9214390185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0343/6446/files/76086342509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/golemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/71389701942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0050/4217/files/refining_of_oils_and_fats_for_edible_purposes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/73761469310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/runinagepunatujig.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 8

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_off0000cd1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD1F 5544 bytes
SHA-256: 7bf734485799d50334c43411c70ccaf34641da9cfdeeced2d8c1865c2f0cc7cc
font_01_sfnt_off0000e009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE009 10544 bytes
SHA-256: ea78a1a3d6ede4c3d854683b3a77a5011b8f36693db00f7d91ff97d662cd857f

Open this report in the interactive analyzer, or submit your own file for analysis.