Malicious PDF — malware analysis report

Static analysis result for SHA-256 084f3ecdcab3673c…

MALICIOUS

PDF

61.4 KB Created: 2020-09-30 13:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 092f37d885e675f6d13eececb4d2a94c SHA-1: 1a24d19d776b255d83cccba40f84a61b7cd1fe3b SHA-256: 084f3ecdcab3673ca04bb1942994ab35a571caa06552942869b2a9e814dd9379
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of this malicious infrastructure. The presence of a link farm and a high ML classifier score further indicate malicious intent, likely to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/strik?keyword=socialist+economy+notes+pdf In PDF document text
    • http://volozuzu.rbt247.com/uploads/1/3/1/6/131636948/6279509.pdfIn PDF document text
    • http://vosop.coffeetacoffee.com/uploads/1/3/0/7/130738525/1450937.pdfIn PDF document text
    • http://files.placeworksdesign.com/uploads/1/3/1/6/131606346/liwirikido-fiduzexupadesa-subexezesusip-besosolej.pdfIn PDF document text
    • https://site-1037081.mozfiles.com/files/1037081/32549554258.pdfIn PDF document text
    • https://site-1036786.mozfiles.com/files/1036786/9735594317.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/1/0438/4020/9056/files/25803222875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9286/0327/files/john_milton_samson_agonistes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/8824/9757/files/action_words_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4836/8288/files/west_coast_fishing_report_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/kipavidutodilinagite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04b7af03-ff7c-4b16-8570-dd4ff906339e/14321526855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b768f61-1f4b-4767-b4bd-2698d9b70071/xeputiduxivajuwugogurube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9de50a3c-21b9-42ca-88b3-3bbfed5b4c51/92338098552.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_off0000b334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB334 5408 bytes
SHA-256: f0388a55d436cf8b100a01e1c3f5d426f980e8bf994ef7fd026f646e2a7e7d4c
font_01_sfnt_off0000c595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC595 10240 bytes
SHA-256: 512c1cbecad15c060498e1744245480c3a4d16779954c9c336c5226852364617

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