Malicious PDF — malware analysis report

Static analysis result for SHA-256 b28a27bcdbc3076e…

MALICIOUS

PDF

76.5 KB Created: 2021-03-03 13:49:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 30d67dac9c02fe19d5e398071c4922e3 SHA-1: 8586c629b1380a70ed96fe7ef83d93d4e6ded6d2 SHA-256: b28a27bcdbc3076ead28d706917a76e61ef64dcd3af37758bfca232e0d67c7ee
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://baarspo.ru/wix?keyword=the+girlfriend+abigail+barnette+pdf+free+download PDF link annotation
    • http://test123test.xyz/tovirij4vgvb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501774/normal_6007d6f70198b.pdfIn PDF document text
    • http://world-wildshop.com/nasagebefapeofyrc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444110/normal_5feeb7a287274.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469828/normal_5fe19731176d3.pdfIn PDF document text
    • https://cdn.sqhk.co/worekoxe/ciW3adX/crossword_puzzles_free_online_games.pdfIn PDF document text
    • http://wabesiguz.22web.org/23239718120.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454042/normal_5fd16e18f22fb.pdfIn PDF document text
    • http://maddot.space/wrong_synonym_formal28d8u.pdfIn PDF document text
    • https://rusaxexuratibu.weebly.com/uploads/1/3/2/6/132680860/nukuwepirilufino.pdfIn PDF document text
    • https://nidukonijeso.weebly.com/uploads/1/3/1/3/131381088/2cdba44c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423166/normal_6034fb2c5b404.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/jgirMAJ/12501890535.pdfIn PDF document text
    • https://cdn.sqhk.co/terodekijur/e0jmidR/juxebetak.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/aieibgh/download_jungle_fly_jay.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vonibuvet.rf.gd/chemistry_chemical_bonds_and_lewis_dot_structures_worksheet_answers.pdfIn PDF document text
    • http://tirosonitagaxe.rf.gd/60428613660.pdfIn PDF document text
    • http://pititonekeget.epizy.com/obsessive_compulsive_personality_disorder.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_off0000ee6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6B 5308 bytes
SHA-256: e8d8f2c421c7c1b7b8ed36c7f368465a3216b6802774059721506706a1726522
font_01_sfnt_off00010082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10082 10540 bytes
SHA-256: 2c772bfa601a2044461ec46a653ce2326e461f89f64b2a1a74eb9767113841ed