Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a3f6ec7d0c27ea5…

MALICIOUS

PDF

49.8 KB Created: 2020-07-15 21:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ec39d720b5bfadd5b566e7181941bd0 SHA-1: ff9a9b67f582befe152b627263a8dafa5bad1db9 SHA-256: 5a3f6ec7d0c27ea5e6e523b0975116ab4f6b581eef1cfe48f687a896fca6a2d5
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to redirectors and potentially malicious content. The heuristic PDF_SEO_LINK_FARM indicates a link farm designed to manipulate search engine results, likely to distribute malware or conduct phishing. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the embedded links suggests an attempt to redirect the user to a malicious site.

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.cc/pify?keyword=arquitectura+bioclimatica+en+mexico+pdf In PDF document text
    • http://files.robin-shapiro.com/uploads/1/3/0/7/130775134/tokikanosadatobol.pdfIn PDF document text
    • http://files.cajohnsonconstructioninc.com/uploads/1/3/1/1/131164157/milunolaxuxowafopewi.pdfIn PDF document text
    • http://files.craig-main-connection.com/uploads/1/3/2/6/132695633/kipudowesum.pdfIn PDF document text
    • http://files.plantshopyyc.com/uploads/1/3/1/6/131606321/d0fe0093d.pdfIn PDF document text
    • http://files.malagaholidayrental.com/uploads/1/3/1/0/131070633/655712e6055d3d.pdfIn PDF document text
    • http://files.bfdsandiego.com/uploads/1/3/1/8/131856815/kopomodulav.pdfIn PDF document text
    • http://files.sandaharrboerboels.com/uploads/1/3/2/6/132681566/6896535.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://daborexawuv.files.wordpress.com/2020/07/dosivodapipes.pdfIn PDF document text
    • https://kedojisap.files.wordpress.com/2020/06/5817967342.pdfIn PDF document text
    • https://xokapezivivo.files.wordpress.com/2020/07/42774393655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/linepivekoburinodawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/gisewov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1729/8342/files/susefovofel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4649/3605/files/mafaripuvufesalunoxuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/70213827111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/83168590698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/ranuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0685/3269/files/bafokekubu.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_off00008163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8163 5328 bytes
SHA-256: 3d4256e5b020a3e2032ee1569d703b9f59497b6fa4d3e04f787658c73c624fb4
font_01_sfnt_off0000935c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x935C 11124 bytes
SHA-256: 290a2b54160f6b53a3ccdeed32e304a48d434a50117632291ebbedfcb39adc09

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