Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd7ef04d79b366d…

MALICIOUS

PDF

47.9 KB Created: 2020-07-28 22:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 680a5aaf49148fcf7ae72508e2e1bae9 SHA-1: d23a6de3ccb7098ad08ef9dd3986069c56694eb6 SHA-256: cdd7ef04d79b366da26dae88f39916c72267220b50d0b4e15c7cb6c69df105dd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One critical heuristic indicates a malicious redirector link to 'ttraff.cc'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf and includes a reference to 'Kingfisher plc annual report 2008', likely a lure. The presence of a malicious redirector and a link farm suggests an attempt to drive traffic to malicious sites, potentially for phishing or malware delivery.

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=kingfisher+plc+annual+report+2008 In PDF document text
    • http://files.tkoutdoors.com/uploads/1/3/2/7/132740633/wanewe_saxijobuva_wifiwuwavazab.pdfIn PDF document text
    • http://files.stephaniewestliterature.com/uploads/1/3/1/4/131411596/3822355.pdfIn PDF document text
    • http://files.myworldinanutshell.online/uploads/1/3/1/6/131636808/fojabapenipolox_kijowakapigage_rokol.pdfIn PDF document text
    • http://files.decor-boutique.co.uk/uploads/1/3/2/6/132695388/kuxirologalun.pdfIn PDF document text
    • http://files.giveusbreadandroses.com/uploads/1/3/1/3/131379296/sobozapexepogan.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/1/0431/3346/8821/files/dosiwesemup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4459/2021/files/biwewusux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/72134889281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73470001672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/25928171059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/87400156004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9177/7949/files/31845275756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3928/3608/files/95619415969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/35458404466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fodafozisejuleluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9565/2504/files/62278486305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6667/8686/files/zojedenelidununumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/gaxepitubib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2197/6220/files/15105729085.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA9 5596 bytes
SHA-256: b8c54b67a2030f54443c07f835dc35b5e4c76643e4e4149f4314b859f5f2b5c2
font_01_sfnt_off00008dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAD 11080 bytes
SHA-256: 036f5691bde5fab0a7a21f001fed6a92461ff097c31a4b0b3f7e520914adf045