Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eeafc2d071de540…

MALICIOUS

PDF

43.4 KB Created: 2020-10-02 17:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4a65e1d04a269b5494591872e9389ae1 SHA-1: 8f59a33ba733a392e6df44d5a70569552ec1b7a4 SHA-256: 8eeafc2d071de54032f8150abd25a1446a7779674bed4ee58a01ce376e903de5
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF document functions as a link farm, embedding numerous URLs that lead to external content. One of the primary links redirects to known malicious infrastructure, indicating a phishing or malware distribution attempt. The document's content, though partially obfuscated, includes a URL that is part of a redirector chain, likely designed to lead the user to a malicious site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/pify?keyword=airbus+january+2020+order+and+delivery+date In PDF document text
    • https://site-1037885.mozfiles.com/files/1037885/42146501124.pdfIn PDF document text
    • https://site-1036938.mozfiles.com/files/1036938/josimejevupido.pdfIn PDF document text
    • https://site-1036655.mozfiles.com/files/1036655/linuxumilenimolebovux.pdfIn PDF document text
    • https://site-1036829.mozfiles.com/files/1036829/zinukifukufifufijoxa.pdfIn PDF document text
    • http://vuvur.missingpersonsrv.com/uploads/1/3/2/3/132303354/598715.pdfIn PDF document text
    • http://files.eutropiatours.com/uploads/1/3/1/0/131071167/397e7f.pdfIn PDF document text
    • http://files.makingmathmiracles.com/uploads/1/3/2/7/132710627/jiwefeludujenan_pobabupesamaxi_lirep_mikixotazex.pdfIn PDF document text
    • https://site-1037094.mozfiles.com/files/1037094/45458320874.pdfIn PDF document text
    • https://site-1036679.mozfiles.com/files/1036679/32550824810.pdfIn PDF document text
    • https://site-1038532.mozfiles.com/files/1038532/69379542088.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/1/0481/7246/6325/files/geometry_chapter_8_test_form_2d_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3149/3784/files/povuzaralamiwegosasonujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/2591/5045/files/86398357837.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_off00006b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B41 5460 bytes
SHA-256: 522a82d0453cda89ed40ab5b5ea691347fdab458b5f29609dfd2a128150c5766
font_01_sfnt_off00007deb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEB 10076 bytes
SHA-256: 9e825d27c278d591067c9daf90a4ee0d53fc8ddd9f89879e3fead32a478d1698

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