Malicious PDF — malware analysis report

Static analysis result for SHA-256 665f82adf6d840b0…

MALICIOUS

PDF

66.8 KB Created: 2020-10-30 19:44:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6ff2bf0c7587e9e1c281eb51e865a306 SHA-1: 1ec817fe76f8cfd02790184ee54d7652bd8e8f1e SHA-256: 665f82adf6d840b0ab9ef8f117903b03b6fcb16dfe53e389587d2d859b0478a4
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file exhibits characteristics of a link farm and SEO manipulation, with numerous embedded URLs pointing to external PDF documents. One of these URLs, 'https://ttraff.me/123?keyword=the+amazing+atheist', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and another potentially malicious link, suggesting an attempt to lure users to malicious infrastructure. The ML classifier strongly indicates maliciousness.

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.me/123?keyword=the+amazing+atheist In PDF document text
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/3911336.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/1/0501/1708/3286/files/55537085017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4ee7ef7-ea9d-43e3-a2f0-0304155bc40b/94730065413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9f33546-ef49-45f1-83bd-3f109df8b5cd/47086032875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7527/9283/files/fundamentals_of_nursing_volume_1-3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4860139d-ba7a-4b3a-88f7-e15244ad4bd0/ramtha_the_white_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8881/3461/files/formal_and_informal_language_worksheets_high_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff188468-5ce5-473c-bc78-20f64e5ef8b5/sosobuduvuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/424e13c1-c047-4da9-98df-6a7d14191058/43610301740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/8763/6896/files/tipipubosoboxitox.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/bfs_and_dfs_in_ai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/389919f7-f74f-4766-adb7-993c0c145cf5/the_island_of_dr_moreau.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6e97810-5536-4a88-96fc-262a0417cea2/vasunifuxinos.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/5498129736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9713/8358/files/transmission_lines_and_waveguides_anna_university_notes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6CC 2964 bytes
SHA-256: 00cd1799267c37c217f3a9601200259062253bbfa8cc70a01cf1be6c487911f5
font_01_sfnt_off0000c162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC162 4972 bytes
SHA-256: 73384c2680b9aebc33daa95357e65576fc63e0f818bc445ecaab41870696eddb
font_02_sfnt_off0000d231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD231 13780 bytes
SHA-256: 93aa062a6c326c9fa978d100b1a461fa949b6e28bc5c91a8586d3160a96b8194

Open this report in the interactive analyzer, or submit your own file for analysis.