Malicious PDF — malware analysis report

Static analysis result for SHA-256 10572c9d87732256…

MALICIOUS

PDF

35.7 KB Created: 2020-08-10 13:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a163bd5734b5831ae4f87b3bd654b852 SHA-1: 5c09a816085e1802ed23830575dcc996d9f2fde8 SHA-256: 10572c9d87732256a277d8a2e3deec984675544732ee3e6719d01ac48e87465a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service designed to obscure the final destination. The primary redirector URL is associated with malicious activity and is presented as a "free download" lure. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content, likely for further exploitation or 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.ru/pify?keyword=case+study+research+design+and+methods+yin+pdf+free+download In PDF document text
    • http://files.thegerryromero.com/uploads/1/3/2/6/132695467/185056.pdfIn PDF document text
    • http://files.planetaryprogression.com/uploads/1/3/0/9/130970014/9889229.pdfIn PDF document text
    • http://wutalibi.dlsled.com/uploads/1/3/0/7/130775085/nojod-jevemiruxefiri-jabima.pdfIn PDF document text
    • http://files.chrisfritze.com/uploads/1/3/1/4/131406036/zujenodimevini.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/1/0433/0687/7080/files/xorufolikuvuzinekotawoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/37176864650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/57816152510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4267/5608/files/xelejepuxikezuvele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/tomozotodakajaxodob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/34687902072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1564/3041/files/nedis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/xanoxakuwisimiperi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0700/9180/files/acquisitions_incorporated_the_eye.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0860/4829/files/59881612461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/52823619535.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 2

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_off00004b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B7F 5668 bytes
SHA-256: 7f730d50f46230b5d0a0984f4f3aa757ee6efd49c56c595f73044694ce837ef1
font_01_sfnt_off00005eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAE 10644 bytes
SHA-256: ae428d22135a73ff68bb922ea59ad920257ccbb21d769aa85834fea30e9506d3

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