Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb4bffb648529a3…

MALICIOUS

PDF

37.0 KB Created: 2020-08-26 11:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43c08166d92faec85118b31897e350c3 SHA-1: 52a6cb6797cc3803be81334d5c5ce89caae65b15 SHA-256: 0eb4bffb648529a3c2a0db80c4229bd4b1b86dad46cc4107e873664c425e917d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious sites. The embedded URL points to a redirector that is known to be malicious. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics.

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=programa+de+honores+ala+bandera+en+preescolar In PDF document text
    • http://files.kapanshipman.com/uploads/1/3/2/6/132681954/656e22284117.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/1/0430/7392/9378/files/3m_structural_adhesives.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/27829159448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/dewinitupupinomuwoninu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1304/5398/files/project_timeline_template_ppt_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/0338/6517/files/rilovotewemudimexopesita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5345/6289/files/53136404210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7035/7653/files/midasoduranafosiregozama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3846/4417/files/goxapaziwisudabenex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7854/9665/files/21020748462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/55732597951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/java_programming_in_urdu_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6393/4105/files/the_hobbit_study_guide.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 3

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_off000050a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A6 5628 bytes
SHA-256: 2772f5ab9a7a0432851a1f6db2470f3c5e5f28aa7678f173bc8a8fac0ba48ffe
font_01_sfnt_off00006395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6395 10868 bytes
SHA-256: f76c528fc40b247efc5ecdec646b4e05963828d8d4dda29c8fcdd57e6e2a8898

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