Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd50d98bbfef639b…

MALICIOUS

PDF

69.7 KB Created: 2021-01-25 20:25:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b21c1a3ae5f8244ab293de801809d26e SHA-1: c9c2413cc037efb2fc40d37ccfe26398421b155c SHA-256: fd50d98bbfef639ba38acc125f526cfcdaada15ab32384f60a3a94b5845e4e40
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/wb?keyword=sisters%20of%20mercy%20songs%20in%20movies In PDF document text
    • https://static.s123-cdn-static.com/uploads/4453100/normal_600829981a6b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387565/normal_5fca5f78b944f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367925/normal_5fd3865d9801c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447265/normal_5fd8686705973.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369502/normal_5ff2af0a212f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487918/normal_5fd8361294af5.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/ggspjau/29570739141.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380073/normal_5feb41f1a1f0b.pdfIn PDF document text
    • http://mritzoliver.design/majafoloferimitapa4w70j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410962/normal_600ddc90daa3f.pdfIn PDF document text
    • http://dixajadabaw.66ghz.com/music_videos_hd.pdfIn PDF document text
    • http://biomanua.website/561299469794il93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417543/normal_5fe7a367c6ce6.pdfIn PDF document text
    • http://instapresent.site/yellowstone_national_park_lodging12sbo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lunofalogejutu.epizy.com/ice_bofaml_us_high_yield_index_factsheet.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_off0000d360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD360 5224 bytes
SHA-256: 54f88e8750ac896525a08cf9eee2764e63952200beb86c424027e1f29311ecb8
font_01_sfnt_off0000e52b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52B 10860 bytes
SHA-256: f459c9db8fbb51cd8c1ee4e8caac05d255b9a625e182a0611db3519dad8fd288