Malicious PDF — malware analysis report

Static analysis result for SHA-256 806eb829e3568fdb…

MALICIOUS

PDF

70.2 KB Created: 2021-03-20 23:53:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 43e77c846effed017df7a62c0d088c9f SHA-1: d4bfab906dedc4258541af6d62a3607a6a533573 SHA-256: 806eb829e3568fdbef74e5ce0090d5584ef1367f790ec0fca33418cdfd22852f
186 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
  • 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://midufefew.ru/wix?keyword=east+haven+board+of+education PDF link annotation
    • https://luwakanit.weebly.com/uploads/1/3/0/9/130969899/1415697.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/jghZT8i/wheel_size_700c_28.pdfIn PDF document text
    • https://cdn.sqhk.co/xujurovemu/gdlicZW/survival_craft_online_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/fXjciiI/meretepozaxalut.pdfIn PDF document text
    • https://vamarimorojikav.weebly.com/uploads/1/3/4/6/134640123/f95735.pdfIn PDF document text
    • https://vavaxomutiposev.weebly.com/uploads/1/3/0/7/130738712/foxojujoxojebale.pdfIn PDF document text
    • https://sufusaripowo.weebly.com/uploads/1/3/1/4/131437865/3db1c790.pdfIn PDF document text
    • https://zevenaxef.weebly.com/uploads/1/3/4/7/134745307/sagazovosiwizasugir.pdfIn PDF document text
    • https://bevabuje.weebly.com/uploads/1/3/4/8/134897483/jasus.pdfIn PDF document text
    • https://wazalopa.weebly.com/uploads/1/3/0/8/130814586/vofaxilakudu.pdfIn PDF document text
    • https://cdn.sqhk.co/gapobuzijiru/bsZNidc/lejokafobejix.pdfIn PDF document text
    • https://paweweribawu.weebly.com/uploads/1/3/4/6/134656346/7175851.pdfIn PDF document text
    • https://zatitudebijozi.weebly.com/uploads/1/3/4/4/134460539/9347921.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c8afd9a-5cfb-4a83-a450-37bac5df6d6f/how_do_fish_excrete_nitrogenous_waste.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9178dca7-7c2c-48e9-8cd4-70aa0083c091/88622589067.pdfIn PDF document text
    • https://e4dd5bf8-bd13-43e3-b37b-9624b2564f03.filesusr.com/ugd/093416_27f9bc91f83f499e83cfaefc05468b8f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5257c983-da57-42f1-85f7-5715ee4f3b76/pivibolupisuvatukivo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c91ae25a-0894-4541-ae72-dbcbcabee440/giwimagodepamewonigowibak.pdfIn PDF document text
    • https://b18ac5c8-c825-4c59-a0a1-290c879ce4f6.filesusr.com/ugd/1a0fde_238bbdcd28e040e38e2b04fe1912f1b9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a636fe61-cbee-4d97-a925-87d2cbd6ea75/31811585739.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_off0000d361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD361 5232 bytes
SHA-256: 3c970b13ced56bf7aba6d188cc928ecb8f88cc340cfc4e1ccddfa4ba8b180dfb
font_01_sfnt_off0000e531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE531 11976 bytes
SHA-256: baf194bafd3d167a19bd3e400181f33bf4c712ed50f90fa34deb2cf1e019d73d

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