Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba608a56474a655a…

MALICIOUS

PDF

40.0 KB Created: 2020-08-17 10:58:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dafd1b2040ee873dcd3d9cab4adce976 SHA-1: f172337937e8bfef7c49de7521c49c602d95d43a SHA-256: ba608a56474a655afcf217784f9be8b8a6be0f9b79ef09986cd1f177defe48b2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. Another critical heuristic identifies a PDF link farm, suggesting a tactic to manipulate search engine results or direct users to malicious sites. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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.ru/pify?keyword=lutheran+church+of+the+reformation+milwaukee In PDF document text
    • http://files.foxedenterprises.com/uploads/1/3/1/0/131069950/9460e61cdec8.pdfIn PDF document text
    • http://files.lifelinegospelministries.org/uploads/1/3/0/7/130739678/731b6a9f3fe02a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4958/1724/files/34752042583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/dogipibep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/excel_sheet_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2766/0951/files/free_online_bollywood_movies_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8549/5453/files/48675025346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7679/9903/files/b._f_skinner_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6123/9192/files/b_v_raman_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9861/9557/files/25304729008.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5298 4924 bytes
SHA-256: 1c9669891ad70258e3bba23917a7bd19bd24bab06223becf5f1c6c2227412d0b
font_01_sfnt_off00006331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6331 9904 bytes
SHA-256: 3e7ca536ca5729c8c6689e04618a0961e3842833f469ec15006b5030369546ce
font_02_sfnt_off0000851c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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