Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9eda7ba0d7eef24…

MALICIOUS

PDF

79.9 KB Created: 2021-02-27 00:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 4f479f262cc7a2ccb1512112f16b700a SHA-1: 893afbe6b6f011f5d708177d6c98eb0ce9011c79 SHA-256: d9eda7ba0d7eef24338471efa629b962dcbabfeeccfc954600e453a0a9f8ca80
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a critical heuristic identifying a 'PDF_SEO_LINK_FARM' indicating a large number of outbound links. One prominent URL, 'https://mezovuduw.ru/award?keyword=lorex+eco4+960h+keeps+rebooting', suggests a lure related to technical support or product issues. The presence of ClamAV detection and ML classification further supports its malicious nature, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://mezovuduw.ru/award?keyword=lorex+eco4+960h+keeps+rebooting PDF link annotation
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/fisanotefekapin-nedem-mitazog-savopumopi.pdfIn PDF document text
    • http://kihepc.xyz/codigos_sagrados_2017j1jpm.pdfIn PDF document text
    • https://bixavovene.weebly.com/uploads/1/3/0/7/130775743/dedeneb_joretogiwumoda_luduwiniriv.pdfIn PDF document text
    • http://power-guard.shop/60841166209jsmdt.pdfIn PDF document text
    • https://rorupuloloxotog.weebly.com/uploads/1/3/1/4/131409755/1684404.pdfIn PDF document text
    • https://vavaxomutiposev.weebly.com/uploads/1/3/0/7/130738712/2429508.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/bepukuba/puripebewuwojaginex.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/bubop.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/15038942088.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/jonevevimoje.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/dasafabinepot.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/battlestar_galactica_episode_guide_season_2.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/sesegutoxegepenagefo.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/dajiperesajebaraf.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/milotozoligafubik.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/coffee_meets_bagel_dating_app.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/7389523707.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/90810946078.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/purugusu.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/telifilebokinevugukik.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/fatopaxatudunorurikifetal.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/kindle_paperwhite_2013_user_manual.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_off0000fae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE5 5704 bytes
SHA-256: 2eba4b80c3894f3621a751d8c890a98ecf20706f8819abf755ffdd9e2038a9d7
font_01_sfnt_off00010e58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E58 10324 bytes
SHA-256: f47e46a6924f04962ece3dd83131cdb4a1c446a18751a0bb9f5d07dba63ad37b

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