Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc3cb198f5d0dc9…

MALICIOUS

PDF

64.6 KB Created: 2021-02-11 14:26:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: dbd0f7687fc4426afdfb654b6953beeb SHA-1: 90c85046e56daae62bbc2276ca8a954222d0ebcb SHA-256: 3cc3cb198f5d0dc9cc32acc1a79ca47a083d8cbd75491007255780217ba48409
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://crophysi.ru/wix?keyword=v+buck+generator+for+switch In PDF document text
    • https://buvapubadoloj.weebly.com/uploads/1/3/4/2/134265521/2f587b1.pdfIn PDF document text
    • https://xoxekoxezugox.weebly.com/uploads/1/3/0/7/130738790/gobetefafum_limonakuxomose_jiwolug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450247/normal_5fe9369f44a7b.pdfIn PDF document text
    • https://bikafosujikus.weebly.com/uploads/1/3/2/8/132815014/8803381a.pdfIn PDF document text
    • https://nofuwotepilob.weebly.com/uploads/1/3/1/6/131636733/1094a3422.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468820/normal_5ff11c034b9cc.pdfIn PDF document text
    • https://samivixawudajan.weebly.com/uploads/1/3/4/6/134634686/zizoloxowida.pdfIn PDF document text
    • https://wesonibisizigoj.weebly.com/uploads/1/3/0/9/130969529/5090201.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379043/normal_5fdee4720d2bf.pdfIn PDF document text
    • http://sentytld.online/logistica_de_aprovisionamiento77ori.pdfIn PDF document text
    • https://bajigexok.weebly.com/uploads/1/3/4/1/134131467/zazegubaxanux.pdfIn PDF document text
    • https://ginuwawabesinu.weebly.com/uploads/1/3/1/1/131164414/9072057.pdfIn PDF document text
    • https://zupelewelasilag.weebly.com/uploads/1/3/4/5/134594614/pegubuzaturotumat.pdfIn PDF document text
    • http://medicalpracticementor.com/gesexonizomikejumnp6jo.pdfIn PDF document text
    • http://ramuwazezu.22web.org/zuxedenalotelax.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/31kheDr/metro_boomin_sound_engineer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vanabigura.rf.gd/52362814167.pdfIn PDF document text
    • http://sokexodine.rf.gd/811624279.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB867 5372 bytes
SHA-256: f4ff1ccfd5065d656ad144aff326507aefe605a35b24d231d14cb8c5a3fb5de0
font_01_sfnt_off0000cac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAC2 2092 bytes
SHA-256: 78e94e2e47178245ca437e301e19f50dc99845ecc02da2ba30fe2b1e34051cc2
font_02_sfnt_off0000d466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD466 9644 bytes
SHA-256: 630e1b61532a62dcdae019d5187274c161c3d2fed6ea504fdc4f4aba7b3f3519