Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ea23ba6e3661f2…

MALICIOUS

PDF

39.9 KB Created: 2020-08-06 22:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b27ab9f497da688f7a4fd0aaa1b6f120 SHA-1: 9ed9007475e8a431b36afc741d8b2074b9ec3bf0 SHA-256: 01ea23ba6e3661f2f0cc5a8c0b32b0a1368656b6b323762153d2088aac050566
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector, disguised as a job description. The ML classifier strongly indicated maliciousness, and the embedded links suggest a phishing or malware distribution attempt. The primary malicious IOC is the redirector URL, which likely leads to a malicious payload or phishing page.

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=technical+sales+manager+job+description+pdf In PDF document text
    • http://files.neisdoap.com/uploads/1/3/2/3/132303378/4333660.pdfIn PDF document text
    • http://nitev.mc-authority.com/uploads/1/3/1/8/131871478/6594333.pdfIn PDF document text
    • http://files.kansascoringandcutting.com/uploads/1/3/1/3/131378952/6815400.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/1/0429/9977/5381/files/55319377085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4944/1687/files/articles_rules_in_english_grammar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/guvisokitonugufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8992/8096/files/astrosage_kundali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/vitonutafetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4235/6904/files/suburban_rv_furnace_troubleshooting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/32183314282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/2323366899.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 7

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_off00005c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C57 5732 bytes
SHA-256: c2e60299375b81be83f9cff0e365649937489a40943aed1434adf8196ad300a3
font_01_sfnt_off00006faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAF 10244 bytes
SHA-256: f891447df82b1cae5ab568e298e90a23b6ff8642ee1aa77fe7de449acb5a4e1b

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