Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c975b70b858aa2d…

MALICIOUS

PDF

39.8 KB Created: 2020-08-19 00:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc5bde02507a76a771c8ca0de173cab6 SHA-1: 919dd52a2036aa6dcab6f5666b51378af041ba5e SHA-256: 4c975b70b858aa2d0012352486b8a4fe747c1714afda83b829ce8d15c7cfdf3f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL 'https://ttraff.cc/pify?keyword=the+dark+crystal+imdb+parents+guide'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. 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.cc/pify?keyword=the+dark+crystal+imdb+parents+guide In PDF document text
    • http://files.themealplanningmethod.com/uploads/1/3/1/4/131453177/7658141.pdfIn PDF document text
    • http://files.archieart.com/uploads/1/3/1/8/131856158/xefef_pofasudegedinu_sogalipuv_pozodam.pdfIn PDF document text
    • http://files.live-for.org/uploads/1/3/0/7/130738752/wigalotorogufotata.pdfIn PDF document text
    • http://jaxuximo.craftbreweryinsurance.com/uploads/1/3/0/8/130874493/8642443.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/1/0428/9835/8432/files/34530012154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3305/9737/files/tavazotomeruxul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/79856843053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4533/9814/files/the_book_of_enoch_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9434/3829/files/tajaruwof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3956/2645/files/checklist_excel_formato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/1082838963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4649/3605/files/sukujolaxaxurok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/socialismo_vs_comunismo.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 4

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_off00005af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF4 5740 bytes
SHA-256: 48fcf66bae028f52341f915da3e2ef0f7941051d4ad67e6aa0ed465237033344
font_01_sfnt_off00006e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E60 10548 bytes
SHA-256: c4de70c2f0fe6ae8d6ed3d74d0a69cfe1fa1b376622ccadc3786a779199aac57

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