Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1f95b214e85941…

MALICIOUS

PDF

41.5 KB Created: 2020-08-22 21:08:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc1d6fb2eeb0a72fadcd1d008d5e78d0 SHA-1: 728fcf5289711ecab10080051fd4abd63b1bfbec SHA-256: 9a1f95b214e85941e25282684ae28632bc1ccecf1368364e9b557896960a8b3f
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text suggesting a lure related to a 'Cookbook template for Microsoft Word 2010'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. The primary malicious IOC is the redirector URL.

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=cookbook+template+for+microsoft+word+2010 In PDF document text
    • http://bomexoz.remnantsbarbersho.org/uploads/1/3/0/8/130814070/6877d9f873da.pdfIn PDF document text
    • http://files.votejasonmcguire.com/uploads/1/3/0/9/130969150/8c704ff8e016.pdfIn PDF document text
    • http://files.pickinstick.com/uploads/1/3/1/3/131379049/be91c537e48c.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/1/0433/3531/9702/files/31972948570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/gusot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3427/2163/files/pedagogia_segun_autores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0025/1036/files/76127207731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/como_escribir_un_articulo_de_opinion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/1676293994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0146/files/xexajasugezowaduwuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5680/6565/files/kofumowupudivukagixaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/51137382236.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_off000063b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B1 5828 bytes
SHA-256: eab0a640ab249a485ef936c0e8fb507a274e67cc8e0aa62c114ae77f7ddbfae2
font_01_sfnt_off00007786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7786 9948 bytes
SHA-256: 6b14bd89fca23c6a166aa2ae263641a1ab82a0daac7806a518180a7f30ec344f

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