Malicious PDF — malware analysis report

Static analysis result for SHA-256 c076d22b18850008…

MALICIOUS

PDF

38.8 KB Created: 2020-10-04 09:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: fb8594b466747ecfbae2fcb8e4395761 SHA-1: df0780434ffedbc7f1e6ef3d6c8289dfe32b923c SHA-256: c076d22b188500087aeac6d83561901e5160d8119be4c1bab1b2ebc9eeee69e2
124 Risk Score

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 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://gettraff.ru/strik?keyword=mouse+guard+rpg In PDF document text
    • https://site-1036867.mozfiles.com/files/1036867/porurototenululuxi.pdfIn PDF document text
    • https://site-1039809.mozfiles.com/files/1039809/53608731915.pdfIn PDF document text
    • https://site-1037157.mozfiles.com/files/1037157/kolikosibifa.pdfIn PDF document text
    • https://site-1038709.mozfiles.com/files/1038709/kajowilad.pdfIn PDF document text
    • https://site-1039828.mozfiles.com/files/1039828/nunomosugo.pdfIn PDF document text
    • http://files.tulipanproductions.com/uploads/1/3/1/4/131437657/2308318.pdfIn PDF document text
    • http://files.lakeviewcommunitycentresociety.com/uploads/1/3/0/7/130775740/fuxadewoj.pdfIn PDF document text
    • http://pedule.lisamarieellingsen.com/uploads/1/3/1/4/131407995/ad2d8f4f92.pdfIn PDF document text
    • http://dusibi.samanthacotterill.com/uploads/1/3/0/8/130814868/xafeb.pdfIn PDF document text
    • http://files.lolosvegan.com/uploads/1/3/2/6/132682585/3198257.pdfIn PDF document text
    • http://masivi.auntsadiesbnb.com/uploads/1/3/0/8/130814328/wogebazi.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/1/0483/4305/6533/files/xijaxomekamubivineditenim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1740/3557/files/43138797310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7206/9525/files/58868428108.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_off00005bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFE 5100 bytes
SHA-256: 7e56bc1ef061a2702757c08e1f5beb381f29d64cd23f64e70e5bd0fb52658f1b
font_01_sfnt_off00006d73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D73 9824 bytes
SHA-256: 451d4c4c6f965c6d5c1e4a4db9d6f003812168b5fb85b44ea91260dba147177b