Malicious PDF — malware analysis report

Static analysis result for SHA-256 5086c4991c45652f…

MALICIOUS

PDF

41.4 KB Created: 2020-08-24 02:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6458feeb35836cbc9fe19e022fcf7b6c SHA-1: b007da14594930813f0fe271022e81624b34fc1c SHA-256: 5086c4991c45652f54b5f2fdf402d28dde70f8b28613e80263c35b14ab93f428
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the document is designed to lead users to harmful content. The presence of a large link farm further supports the malicious intent, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=teddy+bear+birthday+cake+template In PDF document text
    • http://dudojom.drleeinfo.com/uploads/1/3/1/4/131407241/kadawe_ripefegosuvar_kufawiz.pdfIn PDF document text
    • http://files.carlosboix.com/uploads/1/3/1/4/131437276/9215426.pdfIn PDF document text
    • http://votalodo.childrenscoalition.org/uploads/1/3/2/6/132682156/jekivovoparuv_wikub_fakixuzur_dobuz.pdfIn PDF document text
    • http://files.mauibeachvillarentals.com/uploads/1/3/0/9/130969545/dejevenatej.pdfIn PDF document text
    • http://taras.wctherapygroup.com/uploads/1/3/2/6/132696056/tijozotolamawot-raniveruv-rupefewi.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/1/0434/5243/2537/files/16007058293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4206/1986/files/hdfc_mutual_fund_change_of_nomination_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7742/2494/files/perkembangan_akuntansi_syariah_di_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7656/7711/files/nugofofomasukigitodul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/tokedodidaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6444/9437/files/hp_dv7_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/kopenowewalefun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9095/1848/files/80343368544.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_off0000648c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648C 5388 bytes
SHA-256: 911824ef4b3d176391fbfac43eea18de7de6e5912bb0ff1782ef49cafb270b73
font_01_sfnt_off000076bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BF 9996 bytes
SHA-256: 9176da512894f91f73d5371886efe51de5f87d9218655d1142e4ec001119fbaf

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