Malicious PDF — malware analysis report

Static analysis result for SHA-256 149006400c87237d…

MALICIOUS

PDF

50.0 KB Created: 2020-08-15 03:40:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 276748fddc2b9c6a2fb2ad7a5c282e81 SHA-1: 85834f88d957d0d800f501bf262451380a6daa48 SHA-256: 149006400c87237d29dc25abc6eda997d5712645c17d83d8a5e9ef6e70555242
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to external PDF files, and a primary link to a redirector URL associated with malicious activity. The heuristic firings indicate this PDF is a malicious redirector and part of an SEO link farm, designed to deceive users. While no scripts were explicitly extracted, the nature of the embedded links and the ML classification strongly suggest a malicious intent to redirect users to harmful 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/wb?keyword=spanish%20to%20english%20common%20words%20pdf In PDF document text
    • http://jusunif.ilovedropmint.com/uploads/1/3/1/6/131636612/8370429.pdfIn PDF document text
    • http://files.fichautauqua.com/uploads/1/3/0/7/130775776/484f03f23a.pdfIn PDF document text
    • http://files.rockiesshrine.com/uploads/1/3/1/8/131856492/lusitonuniwejononob.pdfIn PDF document text
    • http://files.priorityenvironmental.ca/uploads/1/3/2/7/132740415/poturowinu-pepurefeme-zomoxiru.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/1/0431/6423/7992/files/78090163329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/26199975133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5376/8090/files/21832232932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/4416/9878/files/62041589156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/acharya_prashant_books_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/22512801537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/fibefetodif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6018/2692/files/jelubuvetub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1731/2168/files/43818224782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8063/6833/files/85086714603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/82595467958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/razerogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/nadekul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3458/0891/files/7488062599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9912/7957/files/lipisuno.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_off00007d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1B 5764 bytes
SHA-256: f641ab94bdbc3e52338c0493419c5c0d20b9b2fa1ad5fc23126dc9842ed5bd99
font_01_sfnt_off00009096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9096 12952 bytes
SHA-256: 903c358395dff8b535909745ec6187cb5abbc5964cd5f60f0de8ddb2ebc970cf