Malicious PDF — malware analysis report

Static analysis result for SHA-256 598a5b357f297883…

MALICIOUS

PDF

69.7 KB Created: 2021-03-03 16:04:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9fcecf5275bad4021f545cca0e48e09d SHA-1: 70ac09ff24b86acbe21ce839900b835175595893 SHA-256: 598a5b357f297883aadae3c0f1416c095cc48e15bb50835f90f94fc60681a353
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://pelibifir.ru/wix?keyword=good+life+rv+resort+mesa+az+85213 PDF link annotation
    • http://uscreditmonitoring.info/is_the_four_agreements_a_christian_bookir2h8.pdfIn PDF document text
    • http://msertis.xyz/turn_on_wifi_dell5jg83.pdfIn PDF document text
    • http://trokot-tonirovka.online/79149510810305rf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383922/normal_5fde4670d4158.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374848/normal_5ff4c0d168eef.pdfIn PDF document text
    • https://lifulufo.weebly.com/uploads/1/3/1/3/131379971/wimujaxemudat.pdfIn PDF document text
    • https://zodixezujiz.weebly.com/uploads/1/3/5/3/135345824/ce24db.pdfIn PDF document text
    • https://gunobapeve.weebly.com/uploads/1/3/4/7/134706327/3995430.pdfIn PDF document text
    • https://rubebukani.weebly.com/uploads/1/3/0/7/130740450/xivivabu-pawazibo-xumuzalote-ponasaxadarajo.pdfIn PDF document text
    • https://jemijibiwozigep.weebly.com/uploads/1/3/4/8/134855884/5870667.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451375/normal_603831e94c592.pdfIn PDF document text
    • https://fujifarilopo.weebly.com/uploads/1/3/4/4/134483008/luduli_gesesajus_nidepego.pdfIn PDF document text
    • https://jetapixivokob.weebly.com/uploads/1/3/4/7/134726526/1a7428.pdfIn PDF document text
    • http://kprovk.xyz/dazakoxijunikirgbay.pdfIn PDF document text
    • http://help-mediasupport.com/delokogihqqf6.pdfIn PDF document text
    • http://wofijolusiga.iblogger.org/74917335567.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nivewuwasidurus.epizy.com/digitech_gnx3000_patches.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_off0000d282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD282 5860 bytes
SHA-256: 4066474bbc2c39e4e753a7f986faef0b3f8b9e48b881a637c87cf11796d9a276
font_01_sfnt_off0000e675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE675 10412 bytes
SHA-256: b73e2f37a8275e2d5100fc40967587a88bfc3836b158b6045df8750a455764ac

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