Malicious PDF — malware analysis report

Static analysis result for SHA-256 1637dea465a91377…

MALICIOUS

PDF

71.9 KB Created: 2021-02-23 13:40:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4f1cdd428f7303cc9b1ed0b867a28e78 SHA-1: ecdad87c9b4012a1bfa7cd85a031e58392acd972 SHA-256: 1637dea465a9137703daa03de36bcc74ff3f3efef2aa57c7dca154af71652821
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=awesome+memes+for+her PDF link annotation
    • http://pushbiz.fun/xojiririwijofol1bvzz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382430/normal_602be001cb257.pdfIn PDF document text
    • https://voxonororipesap.weebly.com/uploads/1/3/5/3/135383222/balenamibokilixan.pdfIn PDF document text
    • https://pizijejubuga.weebly.com/uploads/1/3/4/8/134883891/fawik-sosafuwujivupab.pdfIn PDF document text
    • http://ccckkkkk.space/38412702826o83m7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445128/normal_600261051f147.pdfIn PDF document text
    • http://dkmz3.club/mini_aussies_with_tails_for_sale9d6qp.pdfIn PDF document text
    • http://betmoy54.com/92552315378p3nz0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365547/normal_5fe5c7b94843f.pdfIn PDF document text
    • https://xasevezivim.weebly.com/uploads/1/3/5/3/135302984/dawiresakaze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405414/normal_601d985026cda.pdfIn PDF document text
    • https://fozujivopaj.weebly.com/uploads/1/3/5/3/135303700/8674951.pdfIn PDF document text
    • http://agent-spv.space/93224809580e6r02.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/damuworixa.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/answering_meaning_in_gujarati.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/86405772709.pdfIn PDF document text
    • http://wekumut.epizy.com/jefavixexugowepoxuvuwa.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_off0000df70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF70 4848 bytes
SHA-256: 6925861367088209510768f5f90a89c2ea3b83bb89cce06d0d294f56d964da8e
font_01_sfnt_off0000efd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD6 10348 bytes
SHA-256: 0663bf19461705f5b44af69684e218d8d480f329c9cb8540b5ca453e35e2a48a