Malicious PDF — malware analysis report

Static analysis result for SHA-256 882873ae942f1b43…

MALICIOUS

PDF

40.5 KB Created: 2020-09-30 19:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e5d5944f06051783b2b4c1827a9d56e2 SHA-1: 3cf6bad4d18125a5d56dc36a9f8a0dbce99e9480 SHA-256: 882873ae942f1b4392ebd367caf9ce50c2927d6f6e72bbeb5239844cdbaa69d7
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ggtraff.ru/strik?keyword=que+es+el+s%25C3%25ADndrome+de+asperger+pdf In PDF document text
    • http://merenin.espiralmana.org/uploads/1/3/1/3/131380828/2005063.pdfIn PDF document text
    • http://jemozu.theconjuredband.com/uploads/1/3/0/9/130968911/8777446.pdfIn PDF document text
    • http://files.haywardcharterbus.com/uploads/1/3/2/6/132683292/jexuw-disodoluriv.pdfIn PDF document text
    • http://jetenozut.querenciayoga.org/uploads/1/3/0/7/130775565/13605.pdfIn PDF document text
    • http://files.southplainswoodturners.org/uploads/1/3/0/9/130969551/nunoxidu_vunurorubu_gunivarapututus.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/1/0436/2331/7662/files/cicerone_walking_guide_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6929/9098/files/how_to_convert_sawhorse_projection_to_fischer_projection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9988/1639/files/bihar_school_of_yoga_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f0c7230-0b92-465b-acea-ccd4c66dab56/95707185890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cd1522d-f074-40f1-8e26-7848acddc224/34020591326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0564840-ae8d-4569-aa56-f4a3a28473fc/85076899247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50c566dd-4fbf-4ba4-b937-0ab6a2d6678a/90115933304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba3fc250-aee4-4dad-82ec-4dcfe4251935/28010922706.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e73df54f-371d-4bdd-8e7c-c0911f734fb3/tevobobazopobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86ff6c33-67e7-4769-92bd-7e8fbfba5943/5964029060.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e621f7e0-26df-4424-b0d3-632dadd43f59/ropofazuritebumuj.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_off00005e87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E87 5476 bytes
SHA-256: 84ae5e725673a51937cab39ffe10cd1bb68f187ad211ae083dd1e868e68a753f
font_01_sfnt_off0000710f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710F 10500 bytes
SHA-256: ab312f3f0df12025084b3adcd90c11f806c6881e30cea5a3cc7c28f43413a188

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