Malicious PDF — malware analysis report

Static analysis result for SHA-256 c114b02673aee98e…

MALICIOUS

PDF

46.4 KB Created: 2020-11-02 15:48:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: aa9e460ea1fd1f98b8aca5cec612c972 SHA-1: 4e86f517e54d82431eb2b2562758ed6fb1079a31 SHA-256: c114b02673aee98e7a9e4c384a93f4cada7284056751946164fb2b5b148ad571
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://ttraff.me/123?keyword=danby+ddw1899wp+dishwasher+user+manual In PDF document text
    • https://duxepanakotijek.weebly.com/uploads/1/3/4/3/134340233/nobibagovimax-devuwovaxuwewu-filaferukuv-mapebosivuzu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405179/normal_5f930bcbb53c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387050/normal_5f9a3593490f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_5f94e8a12eb28.pdfIn PDF document text
    • https://xazotanosiwe.weebly.com/uploads/1/3/4/3/134314219/juviviva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f871bbab10e2.pdfIn PDF document text
    • https://xitupiwe.weebly.com/uploads/1/3/4/4/134489196/tudirod.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/36e2fc72-f853-4066-9c95-1a727dcb7e9e/28944484569.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/how_to_be_a_good_project_manager.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2386/8319/files/bc_water_operator_jobs.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/46912919521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7944/3639/files/jekotibapotod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5676f1af-3fe4-481a-9971-7e929ab75dba/rpg_maker_vx_ace_item_icons.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_off00007491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7491 5936 bytes
SHA-256: e3347bf61fdaa47de8627556a72c245870053df303eb4852de255020db83a15e
font_01_sfnt_off000088b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B0 10724 bytes
SHA-256: fbae69d58fa7fefb5228617e592cdf83db7e81345c0056daabc15c54295251ce