Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaea5545f8e75f56…

MALICIOUS

PDF

37.6 KB Created: 2020-08-13 12:42:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d13e6eb92a522145141a1ab3803a8c8b SHA-1: c809416d727f175b16790d055e081637fb0aa50e SHA-256: eaea5545f8e75f56057b6c32500e5a6d792db80ad457c374164c6a63a1ebc54d
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a known malicious redirector at 'ttraff.ru'. The heuristic firings indicate this is part of an SEO link farm designed to lure users with seemingly legitimate content. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest a phishing or malware distribution attempt.

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=past+simple+regular+verbs+exercises+pdf+islcollective In PDF document text
    • http://files.arttalkcollective.com/uploads/1/3/1/4/131409009/9013369.pdfIn PDF document text
    • http://files.delisodidit.com/uploads/1/3/2/3/132303061/vujosuxopibik-karimuzosososis.pdfIn PDF document text
    • http://xusuxa.forasiacheersfoto.com/uploads/1/3/1/4/131407535/4334601.pdfIn PDF document text
    • http://files.slopebrookfarm.com/uploads/1/3/1/0/131070450/6726060.pdfIn PDF document text
    • http://files.palladinohomeinspection.com/uploads/1/3/1/3/131382346/tugazajofox-vedubanaz-fumeruni-vudegul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8567/4149/files/soporewin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/beginners_guide_to_digital_painting_in_photoshop_characters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/95309491606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0957/8904/files/bank_clerk_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/49726278015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7784/2584/files/59810445729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6540/1753/files/57713788946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/44060212079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1713/files/kefinewijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/kubakosixuvarutizirulewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5312/9629/files/curso_de_ingles_para_principiantes_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9112/2584/files/bivufunizekamopalak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0904/0803/files/kosizodopumilezijataxu.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_off0000471e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x471E 5520 bytes
SHA-256: 18074ce5290ed7de2ab0d21200922406aadaedcf7a4f562a50fbfb1c8ef5b08c
font_01_sfnt_off000059e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E6 9676 bytes
SHA-256: 1287cea68692d465507881ba16eb08e5ddead98541141243c37a119dda0d10ef
font_02_sfnt_off00007af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF9 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333