Malicious PDF — malware analysis report

Static analysis result for SHA-256 440e8529992e55c5…

MALICIOUS

PDF

38.8 KB Created: 2020-08-16 00:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cebd6828e1f516414574494d5c3a0d10 SHA-1: 5017c11ae01747485479c55d2094645878f52f9c SHA-256: 440e8529992e55c57e1d790bf71e9ff146ff2630cdc7676069e28aec37a728fd
194 Risk Score

Malware Insights

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

The PDF contains embedded URLs that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading an 'apk for windows'. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, but the redirection mechanism is clear.

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=live+football+tv+apk+for+windows In PDF document text
    • http://sunak.luckywin-autoparts.com/uploads/1/3/0/8/130874289/2901248.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/1/0431/6394/3067/files/tetas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/florida_warranty_deed_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4436/4710/files/69182407990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4336/4759/files/navisumonebafeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0890/0768/files/zifezis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1373/3534/files/vezobibuvebasezun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/rabukipasagarowumoxagixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2458/7672/files/55705852562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/lutakofobiranovowas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/62147074742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5461/files/57467124249.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 1

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_off00005a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8D 5332 bytes
SHA-256: 26fe464ca66c98c6d49a1d503a42223c7faaf6f9cc39e3b209cea4aa170ba205
font_01_sfnt_off00006cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD5 9968 bytes
SHA-256: 555da1d456dcf35e185dd38d40be9d09f936b5dfbdcd3c5053f4c6320365b315

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