Malicious PDF — malware analysis report

Static analysis result for SHA-256 0980a94892b25568…

MALICIOUS

PDF

41.0 KB Created: 2020-08-08 07:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 632f41d9017e73dedffdba27e1079346 SHA-1: 1f1803dd3da8eb0281776a063bd4e69ed6504474 SHA-256: 0980a94892b255681b9b6118ca2013dab125e82040340f3b8c9f8cd6531cbefe
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, disguised as academic notes. The heuristic firings indicate this is a malicious redirector and part of an SEO link farm designed to lure users. The ML classifier strongly supports the malicious verdict. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, likely leading to a phishing page or malware download.

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=prologue+to+canterbury+tales+notes+pdf In PDF document text
    • http://files.pilatesofweston.com/uploads/1/3/1/4/131453944/6787238.pdfIn PDF document text
    • http://files.brmerch.shop/uploads/1/3/1/6/131606789/1501965.pdfIn PDF document text
    • http://files.theskinandlashlady.com/uploads/1/3/1/4/131455722/mobazasivibufo.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/1/0431/5991/2610/files/sidewexaletu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7955/6504/files/33637648378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6251/0236/files/fubivagonuposejejoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/epson_stylus_photo_1400_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/vmdk_to_vhdx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1459/4466/files/41122895766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/xiwotitebazodoxore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2301/5841/files/after_effects_tutorials_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4898/3959/files/tab_in_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/58162804663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/63007979115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60801944673.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_off000062c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C5 5564 bytes
SHA-256: eca263158d872f4cc86064d8561891e601c04c10e595123f558d3f59aa1c9527
font_01_sfnt_off000075c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C0 9816 bytes
SHA-256: dd04c66a41ff6a1724b0005f4439d9939b982d18f163a7f8a8a7991af44c44db

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