Malicious PDF — malware analysis report

Static analysis result for SHA-256 97bedcc903bdb03a…

MALICIOUS

PDF

66.8 KB Created: 2021-03-02 20:02:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3ceee9143c4d97bc0677fe7fed6d43a0 SHA-1: 11f5cc076d41a5c44b16648ba3995c1f23e9e769 SHA-256: 97bedcc903bdb03a0d6bdf37f35cf1d51feb75a762c3c1f11bdd440c921aecc8
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 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://yafferge.ru/award?keyword=2011+traverse+speaker+size In PDF document text
    • http://towufato.mywebcommunity.org/53710944375.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455196/normal_603616756da4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447084/normal_60004a1f4c0b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393761/normal_603bc8a3188f3.pdfIn PDF document text
    • http://idealica-italiaufficiale.site/pupugejumojarajot81bo.pdfIn PDF document text
    • http://housefashion.ru/faturuxulirag7q6f.pdfIn PDF document text
    • http://henrysavbr.site/gobijudoleniduvekuterowu8eemt.pdfIn PDF document text
    • http://nout-sale.site/vuzunotudipudon4xyh4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449399/normal_5fcf05808a872.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383128/normal_5fdf2ed044c20.pdfIn PDF document text
    • http://myluckywin.site/roman_catholic_prayers_in_zulu16fzp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tiluxusimutine.atwebpages.com/nomifarifasikozexuno.pdfIn PDF document text
    • http://rodedewezijore.atwebpages.com/wamujotu.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_off0000c9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A6 5184 bytes
SHA-256: 5bf33d081ff1da03d1f5127181e5ab6da22ac7bbf4525959ed4cb2dc4679ea46
font_01_sfnt_off0000db6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6E 10364 bytes
SHA-256: 5a1d04f1d53551aa1024334e97921b2d87af94ce4afd49debd814577310b4fbd