Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f25537230b7767…

MALICIOUS

PDF

42.5 KB Created: 2020-08-09 17:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0cd0f22d27ef9bea725c6ee7394d2d0b SHA-1: 5bdffc061d21c98ee46f037ea53c7ca03c0b2ed9 SHA-256: 66f25537230b7767bad0244204623e69ef1d484909e647c442f88ed055d96365
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, many of which are hosted on domains associated with SEO link farms and redirectors. The primary redirector URL, 'https://ttraff.ru/pify?keyword=ayushman+bharat+hospital+list+pdf+in+delhi', is flagged as malicious. The document body, though partially corrupted, contains text related to 'Ayushman bharat hospital list pdf in delhi' and mentions 'wkhtmltopdf', suggesting a lure to download a document. The presence of multiple PDF links and a malicious redirector indicates an attempt to lead the user to malicious content.

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.ru/pify?keyword=ayushman+bharat+hospital+list+pdf+in+delhi In PDF document text
    • http://bagigulo.bloomclothingcompany.com/uploads/1/3/1/3/131380729/897638.pdfIn PDF document text
    • http://javawe.andreaayres.com/uploads/1/3/0/7/130776485/75298.pdfIn PDF document text
    • http://files.somonaukwrestlersclub.com/uploads/1/3/0/7/130775940/wetabuwivipogoxivaf.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/1/0437/0818/6792/files/probability_worked_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1239/6968/files/1530889392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5754/5365/files/dagomakanigapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28650507632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6808/7701/files/98698337160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6019/9573/files/fisokuwesevebusebotixije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/jijevufebolajumoxewimozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/install_git_with_homebrew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2019/7789/files/povinitolosiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/37676709497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7072/3998/files/aprender_hablar_japones.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 3

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_off000068a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A8 5512 bytes
SHA-256: fd9dc0f3a72bd7ba77709b259ba85c2a765ab223ba9030f02826fc2a9b06facc
font_01_sfnt_off00007b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B39 9908 bytes
SHA-256: d2a3e738727f82ab7c532eb7df6639d598b5c437921c458019b7b93cf4aba384

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