Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c555712e8affa3c…

MALICIOUS

PDF

43.5 KB Created: 2020-10-09 12:16:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 81a2d0d3876095702aea45d7aa1218eb SHA-1: 63a53cc3e8c9a7af8ce84b458a37b24eee458f10 SHA-256: 6c555712e8affa3c35fe6177c5057fbda1f6b34284b1b94e014b68805bf45d5d
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=24+oras+august+9+2017+full+episode In PDF document text
    • http://files.fanworldweb.com/uploads/1/3/0/8/130813399/a934cca40ff8f.pdfIn PDF document text
    • http://deran.morrellpi.com/uploads/1/3/2/7/132740478/ae674789115.pdfIn PDF document text
    • http://files.vickialford.com/uploads/1/3/1/4/131406895/4681128.pdfIn PDF document text
    • http://titodudo.cccat.org/uploads/1/3/1/8/131856149/weruboguro_misudafisafupa.pdfIn PDF document text
    • https://site-1043607.mozfiles.com/files/1043607/lojadabo.pdfIn PDF document text
    • https://site-1036772.mozfiles.com/files/1036772/jikanezuvesemifofopazi.pdfIn PDF document text
    • https://site-1037069.mozfiles.com/files/1037069/vijesawuwevom.pdfIn PDF document text
    • https://site-1038422.mozfiles.com/files/1038422/netivetezowuzenaru.pdfIn PDF document text
    • https://site-1040558.mozfiles.com/files/1040558/21750842918.pdfIn PDF document text
    • https://site-1038753.mozfiles.com/files/1038753/wokisaneg.pdfIn PDF document text
    • https://site-1037224.mozfiles.com/files/1037224/kofofok.pdfIn PDF document text
    • https://site-1040876.mozfiles.com/files/1040876/87328599562.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/1/0502/3671/9269/files/pomapiguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9715/1904/files/macbeth_character_chart.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_off00005eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB6 5764 bytes
SHA-256: 7962a4d9179ea57f6cbb36f3bf662557d0ba9e4e99fb745793c590562a4db9fa
font_01_sfnt_off00007271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7271 15080 bytes
SHA-256: 514c8973e96697007473524c4ed0f6c96f6bdae4b112ce5613174f4314d23420