Malicious PDF — malware analysis report

Static analysis result for SHA-256 10066f1854458269…

MALICIOUS

PDF

37.4 KB Created: 2020-08-21 00:59:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52369963da2859b2b7cf1d34b0db7e41 SHA-1: 3b114f6dcf5b4e3e4a915834d83fa7c368d2b220 SHA-256: 10066f1854458269c4da9f73024931f62b6549cb6a537b99ada3db39c1ab2850
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector URL designed for SEO spam and phishing. The document body text, though garbled, includes the phrase "Holy bible software for pc free" and the malicious redirector URL, indicating a lure to trick users into downloading potentially harmful content. The ML classifier 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.ru/pify?keyword=holy+bible+software+for+pc+free In PDF document text
    • http://files.rubatoappassionato.es/uploads/1/3/1/6/131606789/7605191.pdfIn PDF document text
    • http://files.vanessaseifert.com/uploads/1/3/2/7/132740339/fovakidigilepe_zejemag.pdfIn PDF document text
    • http://files.alzeen.com/uploads/1/3/1/6/131606201/001937.pdfIn PDF document text
    • http://nalumakul.800steps.com/uploads/1/3/0/8/130874030/mufajal-gidadufep-nixunizo-dijarefufafi.pdfIn PDF document text
    • http://remere.childrenofthepueblo.org/uploads/1/3/1/3/131379230/ronibodilalejuvizipo.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/1/0432/1234/1416/files/18299911316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2887/2341/files/834894927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/kitusovukesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6587/6379/files/capital_expenditure_decisions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/84088541112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8857/4632/files/3_day_eviction_notice_texas_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2421/0326/files/boom_boom_momoland_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6368/0929/files/satakol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9765/2376/files/jepiwenagivir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/upload_file_using_ajax_without_formdata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/dictionary_of_forensic_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/composition_of_functions_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1900/8160/files/29740427217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/97977989378.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_off00005283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5283 5304 bytes
SHA-256: 3fd4156cae8c2c48949dc7924eac9417acdad2fd25710713111f02925109bb46
font_01_sfnt_off000064aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AA 10548 bytes
SHA-256: 8dd2e1bcbc6d5744d0776200679f8d1cb49ec9b21f4154c889dc2f40e8ba8c42