Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b584bf1062d853…

MALICIOUS

PDF

42.8 KB Created: 2020-10-01 21:52:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 388bb7fa9ec914621487a95bfb6a0d90 SHA-1: fd1d56daaa0e524a6e3a0f718d86ba2520f2d466 SHA-256: 00b584bf1062d853122299cd6f4773aa76b62ff6b9576e9f44e90e9ebcfd065b
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://cctraff.ru/strik?keyword=ejercicios+de+hoffman+para+pezon In PDF document text
    • http://files.integrativemassageworks.com/uploads/1/3/1/3/131380847/jopudekaxo.pdfIn PDF document text
    • http://kurepipi.kirstenpowell.com/uploads/1/3/1/4/131482962/4d0ed3613a11f.pdfIn PDF document text
    • http://gokesal.yogigigi.com/uploads/1/3/1/0/131071277/7351716.pdfIn PDF document text
    • http://files.awakenenchantment.com/uploads/1/3/0/8/130814676/lagefimerofan-daperodajegej.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/13417383714.pdfIn PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/32483832830.pdfIn PDF document text
    • https://site-1036691.mozfiles.com/files/1036691/90631532744.pdfIn PDF document text
    • https://site-1036626.mozfiles.com/files/1036626/tomoxepavekotavemo.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/1/0432/7283/1134/files/american_history_powerpoints.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/9195/6390/files/1991_honda_accord_ex_wiring_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3915/3054/files/still_i_rise_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0797/7889/files/how_to_cook_quail_eggs_for_dogs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4255/7089/files/46236309853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7111/4915/files/beyond_belief_fact_or_fiction_true_stories.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_off0000679f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679F 5444 bytes
SHA-256: 04209a45d2f04c973fe0ff98df6549e559346a10c1e8da97976ad18725fbaf3f
font_01_sfnt_off00007a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0A 10772 bytes
SHA-256: bfad70078cff197c28d1f83b3508ff404b935a2798d850d6fd834fbfdc3202fd

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