Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69efe253db82417…

MALICIOUS

PDF

72.7 KB Created: 2021-02-15 04:40:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 23ad265f9f9525d3c6ead73ed2dd528c SHA-1: 094f3304c65f2e7042d99e95e95d150bfff87e45 SHA-256: b69efe253db82417f35287af09a60c75861733eb46084c28b6448a2c16db63dd
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://druttle.ru/wix?keyword=elixir+storage+level+13 PDF link annotation
    • https://cdn.sqhk.co/fofodafexadu/rgdghij/xisujeromaxodal.pdfIn PDF document text
    • https://cdn.sqhk.co/kazamepa/hhjcggy/chocolate_mousse_recipe_without_eggs_and_cream.pdfIn PDF document text
    • https://cdn.sqhk.co/wodabumamuv/agchdji/islanders_goalie_varlamov.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/hdxjckG/meter_reader_pseg_salary.pdfIn PDF document text
    • https://rasazumeg.weebly.com/uploads/1/3/1/4/131454762/nigisotadidunud.pdfIn PDF document text
    • https://xibixijuli.weebly.com/uploads/1/3/5/3/135399677/pagadalepo.pdfIn PDF document text
    • https://waniritapi.weebly.com/uploads/1/3/0/7/130739375/8615d.pdfIn PDF document text
    • https://kerusovaxi.weebly.com/uploads/1/3/5/9/135978613/a5e784a3718.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/2Rsxwjg/cordiality_part_of_speech.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxudofexal/jCyCicc/star_wars_squadrons_release_date_xbox.pdfIn PDF document text
    • https://viradigoposexa.weebly.com/uploads/1/3/4/3/134383508/5523a209668fa8.pdfIn PDF document text
    • https://cdn.sqhk.co/mamevugixej/jbKhagf/94290255440.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sulorunak.rf.gd/gawobekatowe.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/xirepodili.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/gozezuz.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_off0000e175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE175 5152 bytes
SHA-256: fdf96c7bcdf6e564d2a99c838c2f6e3c5a5cc63a9ffa0e400fdea48b92ab673c
font_01_sfnt_off0000f323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF323 10184 bytes
SHA-256: 9ad0f8ba1c71c4eddac03e898c68c4510101ab8dcb5d19b8e21c3222a4d0d87b