Malicious PDF — malware analysis report

Static analysis result for SHA-256 5003bc0966561a63…

MALICIOUS

PDF

39.7 KB Created: 2020-08-14 18:48:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14a6ca4d93f210ceadbe8896f036c57c SHA-1: a61c6e5746a0d090842fd7ca87cd2381dd2fe062 SHA-256: 5003bc0966561a63b3c5b4260c20bbf8c43f88c7586fee48a7b8f64cea9297f5
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign Shopify domains but one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wb?keyword=ethiopian%20grade%207%20mathematics%20textbook%20pdf, which is also flagged as a malicious redirector. This suggests the document is designed to lead users to malicious content through a chain of redirects, likely for phishing or malware distribution.

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/wb?keyword=ethiopian%20grade%207%20mathematics%20textbook%20pdf In PDF document text
    • http://files.borderskirental.com/uploads/1/3/1/3/131380531/9850106.pdfIn PDF document text
    • http://monon.pcomproperty.com/uploads/1/3/2/6/132682694/jiropo.pdfIn PDF document text
    • http://files.steppingstonebully.org/uploads/1/3/0/7/130738765/golazekelasi.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/1/0431/4795/2292/files/jivilutudiwunurudokak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3754/7929/files/dakamegogab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/xekom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/55280485884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8171/2287/files/jukawajowutelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5548/7905/files/vawaxexenosop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/26038127000.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 6

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_off00005bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDE 5848 bytes
SHA-256: 91929259489aebee80e056fd04d0a59a7af24a3dd72428b945d0207588a72765
font_01_sfnt_off00006f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9F 10140 bytes
SHA-256: bae454aa0c3c2ce3cd39036ba84b45e1fec53b38b9f878a0ce13c1ee6d024702

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