Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cbfbfd3bd32c4ce…

MALICIOUS

PDF

47.8 KB Created: 2020-10-27 19:26:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 900cd32dfcf029c03cbcfe1bf49864ba SHA-1: b515201b0ad79a2c29df1da18a0fa740101eed1d SHA-256: 0cbfbfd3bd32c4ce3181436017a2ec5d441a9a2ae65bb838603c20e9d4d992d4
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://cctraff.ru/strik?keyword=new+skete+monastery+dogs In PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/5116290.pdfIn PDF document text
    • https://seborokib.weebly.com/uploads/1/3/4/0/134096410/274845.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/fomonutol-xepaleden-bukav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367668/normal_5f957aaea8d44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382613/normal_5f961df13c139.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5f8a97f8c3ff2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379384/normal_5f8b67667aaf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375093/normal_5f9438470f4d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/614a5270-bc7a-4cb8-a143-568e27a2f855/soterolokenigowimaweruz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdf8629c-e4ef-42f6-bcb1-321f97ccb5a1/91548984694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc55c156-57e0-49cc-8ff0-a16ea6293b5a/silizunolurugofebal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5460/7777/files/quaint_contraction_daily_crossword_clue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/9585/2703/files/72208663857.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F0 5340 bytes
SHA-256: 69bf18f59af37a0ddfe34ce3f977180acb39a6f29d0485ade226b6d52d96ddba
font_01_sfnt_off00007720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7720 11360 bytes
SHA-256: 665b1800c6773556e7c532ba62c348348afa2cfbb4a335be33fe6772982b3878
font_02_sfnt_off00009d42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D42 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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