Malicious PDF — malware analysis report

Static analysis result for SHA-256 548965a05a288192…

MALICIOUS

PDF

73.2 KB Created: 2021-02-15 22:00:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 695bba7dfad1fc458112862a2f7bab1e SHA-1: c549e842c4e791efa7a00057acd33c4875f76637 SHA-256: 548965a05a288192473a28b114df59ac4d789c25f430e44bc9e3fcc8fb180991
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://maypoin.ru/wix?keyword=frigidaire+gallery+dishwasher+manual+fgid2466qf4a PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411915/normal_5fcd81732f3c8.pdfIn PDF document text
    • https://suterigegopos.weebly.com/uploads/1/3/2/6/132695321/wavitaburenuru.pdfIn PDF document text
    • https://nunibuzobaga.weebly.com/uploads/1/3/0/7/130740367/sitaxofaxekot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421209/normal_5ff301620fd5b.pdfIn PDF document text
    • https://letazofuwukuge.weebly.com/uploads/1/3/4/8/134869061/sagizozod.pdfIn PDF document text
    • https://xorewodanuvidiw.weebly.com/uploads/1/3/1/3/131381095/tojijufe_jamipese.pdfIn PDF document text
    • https://renijekut.weebly.com/uploads/1/3/4/3/134306869/zugamiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380080/normal_5fe48c9726f93.pdfIn PDF document text
    • https://cdn.sqhk.co/tumupowe/nmhhjih/top_open_world_games_pc_2012.pdfIn PDF document text
    • https://cdn.sqhk.co/repipedifavi/fKjijfH/awesome_ninja_moves.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/tigoFhe/remede_grand_mere_rhume_bebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://pubobiza.rf.gd/christmas_jazz_piano_sheet_music_free.pdfIn PDF document text
    • http://jijabivu.epizy.com/perawisuvesa.pdfIn PDF document text
    • http://dijinisefiregot.rf.gd/54856195733.pdfIn PDF document text
    • http://xibubew.epizy.com/free_english_level_test_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/567554195.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_off0000d3a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A9 5664 bytes
SHA-256: 41bea400802a3b3f3ffc033a9af4030f8f610bbe38c972f66d9ca8dfe8d87ddc
font_01_sfnt_off0000e6cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CB 10104 bytes
SHA-256: 5f72e6979002a196c59d2bd8140e83367bf630aa2bffb6a2c198502326b225c9
font_02_sfnt_off0001095b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1095B 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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