Malicious PDF — malware analysis report

Static analysis result for SHA-256 9752e70c0af2448e…

MALICIOUS

PDF

39.8 KB Created: 2020-07-30 09:35:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4758fea3beb4983f6c813d7391d9c849 SHA-1: 0770be420aa4ce3d02238b3c2741a4a951dfa67e SHA-256: 9752e70c0af2448e054d0993225cfd05a974c445747f8c53020f6a397e1c63ff
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external websites, including a known malicious redirector. The document body, though heavily obfuscated, appears to be related to academic papers, suggesting a lure to disguise the malicious intent. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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=igcse+additional+mathematics+topical+past+papers+pdf In PDF document text
    • http://files.businessbcs.com/uploads/1/3/2/7/132740343/e9c81eaa854.pdfIn PDF document text
    • http://files.eveningwiththeauthors.com/uploads/1/3/0/7/130738739/tumibu.pdfIn PDF document text
    • http://files.thecountryboutiquefl.com/uploads/1/3/0/8/130874588/zenonupa.pdfIn PDF document text
    • http://files.eatthaicafe.com/uploads/1/3/1/3/131383760/kewidejifi.pdfIn PDF document text
    • http://files.nicoledrakewright.ca/uploads/1/3/1/4/131454052/murikoseru.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/1/0432/4684/6107/files/11758517286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0008/5149/files/kafunak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/vavelulusowigavor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/31556191529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0966/2366/files/fojiduvujikeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/fixanitanekudexabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/zafarekazanokewexivutaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/23635050122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/kuzitup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9581/7382/files/64698311743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/29269588116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5129/3599/files/kirowokikomawales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6251/0236/files/vadisamok.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_off00005e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2E 5292 bytes
SHA-256: 52340a4a79a6bf13c3424dc623cbd2f75647be028a65fa70b50324c5be912873
font_01_sfnt_off00006ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF0 9724 bytes
SHA-256: 46a71c5397906d18de14daa4dbd31f6a1d58138abbe3485364e467d040edfee6

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