Malicious PDF — malware analysis report

Static analysis result for SHA-256 de34c79b578e20bf…

MALICIOUS

PDF

42.7 KB Created: 2020-08-14 05:07:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 159a21750f448a5d8417618ae8039ee7 SHA-1: a24663f142019a71685ed29ec55d4867942476d4 SHA-256: de34c79b578e20bf1370767cbc19d6e558b2fb3e935e2478d0a76e5ee75b5a21
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing attempt. The document body, though obfuscated, contains text related to risk assessment templates and the malicious redirector URL. The ML classifier strongly flagged this PDF as malicious, and heuristics confirm it links to known 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=food+defense+risk+assessment+template In PDF document text
    • http://files.slofamilycounseling.com/uploads/1/3/2/8/132816165/newamovowa.pdfIn PDF document text
    • http://files.smallwonderskennel.com/uploads/1/3/1/8/131856723/gofidonovesa.pdfIn PDF document text
    • http://files.eaglehealthinsurance.com/uploads/1/3/0/9/130969818/8c5ca.pdfIn PDF document text
    • http://files.museautoproject.com/uploads/1/3/1/1/131163712/2e795935a93c9b8.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/1/0437/7421/4306/files/career_paths_law_express_publishing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1438/8892/files/75351302149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/sadibila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/credit_card_authorization_form_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9345/0134/files/ganudafexejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6509/6857/files/diario_de_navarra_portada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6629/3401/files/nedesazawexikepoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61411835552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/bujomupiwizer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7682/6789/files/zojibib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2284/3036/files/xexiterilebaluginufetog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6594/9862/files/vexijowilizaza.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_off000069e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E6 5204 bytes
SHA-256: 88e6ecf36b50a77dcb30fb16d16bf1ee34b5fd289635822a971e6d7ff89a3557
font_01_sfnt_off00007b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8F 10080 bytes
SHA-256: 4b53e56645c3d3fe755deb1371b416e9ecd7e51d303eb4848b468c8457e5ec60

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