Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb88cd97a96841d1…

MALICIOUS

PDF

73.6 KB Created: 2021-02-16 02:02:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 07541d5238d466fe242408c1e00d00ac SHA-1: cac753c12ffa69be1f417161419672d936b58a1a SHA-256: fb88cd97a96841d1ebe8de975d5c7e5062a3b2be418363f7f1d3c60813d7557b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=a+little+life+summary+spoilers PDF link annotation
    • http://lnstagramverifycentre.com/mevulujobosizel5n53.pdfIn PDF document text
    • https://folenepawesig.weebly.com/uploads/1/3/2/6/132680852/xedexok.pdfIn PDF document text
    • http://vobugefu.22web.org/english_reading_worksheet_for_grade_2.pdfIn PDF document text
    • http://electorat.org/ad_hoc_network_routing_protocols2k561.pdfIn PDF document text
    • http://nigasheff.xyz/81007416248w8xv3.pdfIn PDF document text
    • https://bativizamazon.weebly.com/uploads/1/3/4/7/134770744/11e9b2b19a98.pdfIn PDF document text
    • http://scandisvet.ru/diode_1n4007_mic_datasheetqobz7.pdfIn PDF document text
    • http://opsnatur.fun/practical_skills_in_chemistry_3rd_editionium6g.pdfIn PDF document text
    • http://civiliscmq.online/therapy_interfering_behaviors_worksheet2fkw9.pdfIn PDF document text
    • https://pudijeda.weebly.com/uploads/1/3/4/5/134586696/fe516566a.pdfIn PDF document text
    • http://helpcontactform.com/tuvojawepedela63s3w.pdfIn PDF document text
    • https://cdn.sqhk.co/pelotuwew/hfgcBuY/73815521934.pdfIn PDF document text
    • http://coloradocustomelectric.com/14466518807pvje.pdfIn PDF document text
    • http://apparently-home.com/kasuvixosalajogovivesatij02hs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://daforewepon.epizy.com/66565245610.pdfIn PDF document text
    • http://nedomawof.rf.gd/sapemu.pdfIn PDF document text
    • http://roxegubipav.epizy.com/73138929433.pdfIn PDF document text
    • http://wojobawezelo.rf.gd/integral_calculus_questions_and_answers.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_off0000e54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54A 5140 bytes
SHA-256: c7cce6a26dd65500da6a4178578b8ec68f5a8a62777157d3523537d4841703e7
font_01_sfnt_off0000f6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B6 10336 bytes
SHA-256: 139500badfbed473bc012d5bbb15e879f88c349da60bfb54f4cefa7fdc77cb92