Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d06dad76454c75e…

MALICIOUS

PDF

53.5 KB Created: 2020-07-27 16:25:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 08776c6d3d157dabbf5bfd5e474f05cf SHA-1: 66910016176765e28b415ef10b2dca1cf98e4d53 SHA-256: 0d06dad76454c75e5ecf9350f73681b1ac7b368534386c7a5a2c6c86547af67d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a large number of external PDF links, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains text related to "business english idioms exercises pdf" and the wkhtmltopdf application, likely serving as a lure. The primary malicious IOC is the redirector URL which is designed to lead users to further 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.com/pify?keyword=business+english+idioms+exercises+pdf In PDF document text
    • http://files.andreagammon.com/uploads/1/3/2/6/132695692/kekag-rojorojadaw-kosefumurodokaw-vizituwaza.pdfIn PDF document text
    • http://files.markkeohanephotography.com/uploads/1/3/1/4/131409794/f317e5c2.pdfIn PDF document text
    • http://files.ayurvedaora.com/uploads/1/3/0/7/130776518/popuwasesemupil_bezata_tuwuvikotugedi_fusaga.pdfIn PDF document text
    • http://files.theflorecercasitasmx.com/uploads/1/3/0/7/130775588/2d35482f527.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/1/0432/2259/7800/files/xonirekokukuwigowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/temibiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/69534507548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6562/2184/files/tezujazeliwuwiledigamun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0159/3507/files/juserofobop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/kusofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8832/1443/files/fawokamobowojij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4944/2713/files/wevexovutituxifufefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/sipifuvexadanarologotenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8403/6761/files/subegunamuxifij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/pegutarosulekasoluza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3161/5909/files/tidejikolowem.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 8

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_off000091ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91EE 5276 bytes
SHA-256: ba86af1adf0b2c9803c510c0c6d95c0bebfb248f64e33c50933066229a3708f5
font_01_sfnt_off0000a3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3A8 10900 bytes
SHA-256: 1bca28dce0b6d2d76c6de27dff6dcf2ecf23a5ca382378bd0a50f6fc89322ce0

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