Malicious PDF — malware analysis report

Static analysis result for SHA-256 5500eb936156e609…

MALICIOUS

PDF

67.8 KB Created: 2021-05-14 20:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: a4a1f08e0c2a83404d9b1f73b0b08387 SHA-1: 1a894224fb963d88998f36d2cf628cbc5e4f9332 SHA-256: 5500eb936156e60964b2e3c0a50265c65f7dd189af43e581dc0330170e0634be
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text suggesting a lure for downloading video clips. The presence of numerous external URLs, many hosted on disposable domains, further supports a phishing or malware distribution scheme. While no scripts were directly extracted, the PDF structure and external links suggest it may attempt to download or redirect to malicious content.

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://xezojetit.ru/strik?utm_term=road+safety+video+clips+free+download PDF link annotation
    • http://unlockdeals.shop/762323652560pgez.pdfIn PDF document text
    • http://2gusevshop.space/blender_2.8_the_beginners_guide_downloadkg8kh.pdfIn PDF document text
    • http://osmosiotzs.fun/hecht_optica_4ta_edicion_espaol9auzm.pdfIn PDF document text
    • http://molotkov.site/how_to_connect_sprinkler_systemhf647.pdfIn PDF document text
    • http://dewodalaluw.mygamesonline.org/sobejuzasezupevuxupoxaz.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://pet-guru.shop/lufupps7t7.pdfIn PDF document text
    • http://lenuvivureropi.scienceontheweb.net/rigonudu.pdfIn PDF document text
    • http://ganedoxumizaj.sportsontheweb.net/75107766921.pdfIn PDF document text
    • http://help-copyrightviolationhelpcenter.com/cisco_sa_dpc3010_modemzp213.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f371e3b2-6423-4b01-9e18-a7a054dd8165/vajupejigozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca63633b-0fbc-42bc-b515-9e1410868c0c/zopusudogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/defe44ab-7832-444a-b30b-08825d16e704/wibagizifexikuwise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55c170f6-1c34-49f8-94fe-c23ed5107e50/xebiporiwud.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/apache_commons_net_ftp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ec0269a-09e9-4e2d-9fde-ce179e3c564e/gofuzeluxilanixariw.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/evelynn_guide_9._17.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea448a55-a754-4e5d-ad06-6bc59abcdbdf/17490142287.pdfIn PDF document text
    • http://natukifuza.atwebpages.com/95692132067.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_off0000cd24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD24 5408 bytes
SHA-256: 560d82f9957b9e13991668620cebe60b8d7f2a7eec405c633107d9cc04b9c273
font_01_sfnt_off0000dfbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBF 10108 bytes
SHA-256: b30b76050e65742aa938edb46912c9b616c8838f8c9acef28f1ef2dfbd73f32b

Open this report in the interactive analyzer, or submit your own file for analysis.