Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd1cc3d3d5b6a244…

MALICIOUS

PDF

54.2 KB Created: 2020-07-23 19:58:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c58b59f9c913d251c21d30460ea1c295 SHA-1: 04b9af3450ee779fc4c319d53a019656cdbd1eda SHA-256: cd1cc3d3d5b6a244455e9516fa1896d896b77bdadbd7dc12522cb0d35ed898e7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, with a critical heuristic firing for a PDF redirector link to 'ttraff.com'. The document body, though heavily obfuscated, suggests a lure related to educational content ('Bodmas fractions worksheet'). The presence of numerous links, many pointing to Shopify domains but also to various unknown domains, indicates a likely attempt to manipulate search engine results or redirect users to malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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=bodmas+fractions+worksheet In PDF document text
    • http://files.realestatepract.com/uploads/1/3/1/4/131408250/4576249.pdfIn PDF document text
    • http://files.skylinemediacast.com/uploads/1/3/0/9/130969206/7a3965fc9affed7.pdfIn PDF document text
    • http://files.classicaltocontemporary.com/uploads/1/3/0/7/130738794/c47b6336ae.pdfIn PDF document text
    • http://files.christhomasguitar.com/uploads/1/3/0/8/130813063/danekitul-jewejuda-mogegoxabomit-rozos.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/1/0427/8029/5334/files/zimademirisubexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/18877031548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/wikavineruzomozokitexan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/gigukomobekafalorulorun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lezoxaxus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0726/2367/files/86059217825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61053474184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/lamapijupokugedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/vaviwovupedojotuzin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/52766493443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/86029416170.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 5

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_off00008d8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8E 5224 bytes
SHA-256: 7c6a24228d53285f90b65a51b4a1dd1e8d3c7a4719787045112d31928c1aa74e
font_01_sfnt_off00009f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F30 14188 bytes
SHA-256: 3754db9ed0dbf34c5bef30b923b74d7fbc368823869b9dff84f55da4ff360062

Open this report in the interactive analyzer, or submit your own file for analysis.