Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e2fb591f88befd…

MALICIOUS

PDF

44.6 KB Created: 2020-08-13 19:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 68a89cd32556ae6ad7726055a62db659 SHA-1: 4743a9f95d7bcd43eb6f53b309a57bf12dbad3fc SHA-256: e8e2fb591f88befd9432a39427b311b68051228b9ae2fe0340cecf8487133cbf
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The document body is heavily obfuscated, but the presence of numerous links, including a large farm of SEO-optimized PDF links, strongly suggests a malicious intent to lure users to external, potentially harmful, sites. The primary mechanism appears to be a link farm designed to attract traffic and possibly distribute malware or conduct phishing.

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/wb?keyword=vogelhaus%20sechseckig%20selber%20bauen%20pdf In PDF document text
    • http://files.rebelliousrheaboutique.shop/uploads/1/3/1/4/131406413/2090860.pdfIn PDF document text
    • http://dosuzosix.nicholelreber.com/uploads/1/3/1/8/131856257/1670753.pdfIn PDF document text
    • http://files.yunkawasiperu.org/uploads/1/3/1/3/131379612/vizarifogumawov.pdfIn PDF document text
    • http://files.morganboardman.com/uploads/1/3/0/8/130874658/repubusotawuzanu.pdfIn PDF document text
    • http://files.creativedatainc.com/uploads/1/3/2/7/132741397/47ab34baff.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/1/0433/9728/3992/files/augusto_monterroso_microcuentos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/tudijufezilitanepojaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1596/8667/files/boatswain_mate_manual_14343a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7920/5018/files/sinelizobijemosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2230/9786/files/81076631897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1027/7025/files/27534117739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/zusudemusopewomifebusotin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/88567121214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/29728210293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/natirojoxafir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1664/2975/files/456270659.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_off00006cd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD0 5588 bytes
SHA-256: e10bb51e31f80a0ef03a4ad50a44f247b90b40904537aa27f50c45efb32bf9cf
font_01_sfnt_off00007fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBB 10968 bytes
SHA-256: 4860884202e42c191bc7fc7facac67af8302f86a778093a6074d2f4a7b4bbaf9

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