Malicious PDF — malware analysis report

Static analysis result for SHA-256 14b3fd0b46fcd9eb…

MALICIOUS

PDF

37.5 KB Created: 2020-10-10 04:26:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fcac8f0daac29abb56435f839f6523f4 SHA-1: 289e0072497e919c81380a21e45ecf6346cca6bc SHA-256: 14b3fd0b46fcd9eb662c32783595d66a8931352a91d80270a690b5add3537dd5
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/strik?keyword=batter+up+bakery+leesburg+ohio In PDF document text
    • http://files.whentigerssmoked.com/uploads/1/3/1/8/131856173/c2758c6b.pdfIn PDF document text
    • http://pivaforat.baileycreekdoodles.com/uploads/1/3/1/4/131410227/nivebamagenaxi.pdfIn PDF document text
    • http://foruxiv.nicoleadriennecreative.com/uploads/1/3/1/3/131379179/9207985.pdfIn PDF document text
    • http://files.ridgewaywilts.com/uploads/1/3/0/7/130775828/sokugogosofot_tedewix_majiza_zekavewuboseso.pdfIn PDF document text
    • http://files.lgpotter.com/uploads/1/3/0/7/130775145/7745845.pdfIn PDF document text
    • http://files.chimachancreations.com/uploads/1/3/1/0/131071035/gemudoxizi.pdfIn PDF document text
    • https://site-1037218.mozfiles.com/files/1037218/31396099345.pdfIn PDF document text
    • https://site-1043353.mozfiles.com/files/1043353/fasevevibuwixikoxegavuga.pdfIn PDF document text
    • https://site-1039730.mozfiles.com/files/1039730/81779773312.pdfIn PDF document text
    • https://site-1036652.mozfiles.com/files/1036652/tupowapajejafevox.pdfIn PDF document text
    • https://site-1039895.mozfiles.com/files/1039895/davobotawu.pdfIn PDF document text
    • https://site-1037899.mozfiles.com/files/1037899/28190677001.pdfIn PDF document text
    • https://site-1040341.mozfiles.com/files/1040341/kamofusofofonep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00005322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5322 5436 bytes
SHA-256: bba8ad16a3b38f4241dd8757a846c7d2b53ad43c60516adfebf11fb0accb80dd
font_01_sfnt_off000065a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A0 10376 bytes
SHA-256: 2434923d272f099ab254d17e386bb6e8d35004bfaa04dce57b759caec8e4a82f