Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c47ecd5ddbc0e21…

MALICIOUS

PDF

43.8 KB Created: 2020-10-07 19:30:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a4caac3686be36ad7ab082dcb0a180cc SHA-1: 771142c4921f23cc65b89c9164905483e547f3fc SHA-256: 7c47ecd5ddbc0e21bb7253d3cd59572ee4be37512ad8b5b30ea18776b6e0d107
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=flammable+cabinet+regulations In PDF document text
    • http://seguwose.wundergrubs.com/uploads/1/3/2/8/132814476/8470516.pdfIn PDF document text
    • http://files.boomstick23.org/uploads/1/3/1/4/131453146/4242341.pdfIn PDF document text
    • http://sajulitax.findtheyeti.com/uploads/1/3/1/3/131397997/5e05d711.pdfIn PDF document text
    • http://files.aedprockymountains.org/uploads/1/3/1/8/131856590/medolipezepovekez.pdfIn PDF document text
    • http://files.theroyalposts.com/uploads/1/3/0/7/130739892/4058753.pdfIn PDF document text
    • http://files.notsuchsecretlife.com/uploads/1/3/1/6/131637073/rewed.pdfIn PDF document text
    • http://files.unionchapelmonroe.com/uploads/1/3/1/0/131070689/1686982.pdfIn PDF document text
    • https://site-1036907.mozfiles.com/files/1036907/52735345236.pdfIn PDF document text
    • https://site-1038774.mozfiles.com/files/1038774/29043682209.pdfIn PDF document text
    • https://site-1037842.mozfiles.com/files/1037842/77661310423.pdfIn PDF document text
    • https://site-1039132.mozfiles.com/files/1039132/tokalokuzefov.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/1/0435/2176/9627/files/zeus_percy_jackson_actor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/byrek_me_kungull.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_off00006f0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0C 5216 bytes
SHA-256: bcde491cbe23ad46bac3ef924d2019aad248b7e1ff66a0d19d622209986f7c28
font_01_sfnt_off000080b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B1 10012 bytes
SHA-256: 0862fa045f9748094be91b55c2ff85c28c57a1c7b0689ce2f5cec5a2a8bb22a8