Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5958f85d2c5b4f…

MALICIOUS

PDF

38.7 KB Created: 2020-10-03 19:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 9b364bd5a4129fac5453d62951cc3bc7 SHA-1: ed6c77fd686bef2cc2de87b1ee31d9ba63ec442c SHA-256: 8e5958f85d2c5b4fe62d24f0804ab106d3dcfef1e3bd5d4567a04d1ecce69738
184 Risk Score

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://gettraff.ru/pify?keyword=graficos+en+excel+avanzado In PDF document text
    • http://files.babsysbathandboutique.com/uploads/1/3/1/6/131637483/mepanuruluxamola.pdfIn PDF document text
    • http://tomodenix.calvarychapeljonesboro.org/uploads/1/3/2/6/132682905/939c9.pdfIn PDF document text
    • http://bewafove.erhsxc.com/uploads/1/3/1/4/131407736/getopegeg-ponar.pdfIn PDF document text
    • http://piwapolig.fairhavenkids.com/uploads/1/3/0/8/130874038/bidekuk.pdfIn PDF document text
    • http://files.rover800.club/uploads/1/3/1/3/131384359/bf52c7383e.pdfIn PDF document text
    • http://dipugon.masterpiecestudiosnc.com/uploads/1/3/1/4/131482975/b1dc4f8b521b.pdfIn PDF document text
    • http://files.yinstillyoga.com/uploads/1/3/0/9/130969131/3523127.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/1/0482/8551/5938/files/vujepumalasavol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/paella_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8994/3975/files/network_unlock_code_for_cricket_zte_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/42476600846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0386/1401/files/the_essays_of_warren_buffett_lessons_for_investors_and_managers.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_off00005794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5794 5224 bytes
SHA-256: 19ef57dff4dfe74e59ddf44e69522992e86f3f6a5ca88ef670837fa14477035b
font_01_sfnt_off0000697e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697E 10844 bytes
SHA-256: 0a7a9bc650287fcbfbced55613198ec3cad1987c1c327635d1e7edb2ea325a30