Malicious PDF — malware analysis report

Static analysis result for SHA-256 77b5721f3e81a3cd…

MALICIOUS

PDF

63.9 KB Created: 2021-02-08 03:03:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 62a9303e8c7e8cfd7e6a85935e449e5b SHA-1: af1cc41431a42b8c664531c6595286b0877a18d6 SHA-256: 77b5721f3e81a3cde7007047b4432c567217c0003860049a1be013c1c285231c
126 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
  • 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://bologen.ru/wb?keyword=air%20washer%20maintenance%20manual PDF link annotation
    • http://usecabinets.xyz/kegipadanawopakijo3750a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448094/normal_6007d8c1aedd0.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuputid/Mhghdct/52759479197.pdfIn PDF document text
    • https://duxoberadu.weebly.com/uploads/1/3/4/7/134718286/1295594.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/rhh5aXV/65219248934.pdfIn PDF document text
    • https://desebenenoda.weebly.com/uploads/1/3/5/3/135348916/6247076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_600b7593dce10.pdfIn PDF document text
    • http://pasetbs.xyz/talking_tom_jetski_2nl3dm.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/plhiC7b/duxaxegu.pdfIn PDF document text
    • http://hellovendi.com/300190345171ipgk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481166/normal_60053945bf4e4.pdfIn PDF document text
    • https://cdn.sqhk.co/pevizopubok/hcTgiDL/sword_and_shield_dlc_pokemon.pdfIn PDF document text
    • http://discount50it.pro/fijegerja4p3.pdfIn PDF document text
    • https://jifimarug.weebly.com/uploads/1/3/5/3/135319291/cb4698d6.pdfIn PDF document text
    • http://mrshadow.net/53697381753wx9k4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nadadeze.epizy.com/sad_quotes_for_whatsapp_dp.pdfIn PDF document text
    • http://jopimuriwunewok.epizy.com/contouring_guidelines_for_carcinoma_cervix.pdfIn PDF document text
    • http://konuruxad.rf.gd/weather_makes_a_climate_worksheet_answer_key.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_off0000bde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDE7 5120 bytes
SHA-256: 5d568878cb7688484919384d87ef84ec258aaac54978aa42edcaf7ade0464c77
font_01_sfnt_off0000cf32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF32 10428 bytes
SHA-256: 798414f518447c423cb57476d5dd045e85bfe04ed4b316ab6ea6d3095b115c61