Malicious PDF — malware analysis report

Static analysis result for SHA-256 1828339afcfe5f33…

MALICIOUS

PDF

79.0 KB Created: 2021-02-28 13:31:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5ad27b699b565667ac8e52fdc5055543 SHA-1: d8d730583e7c18d322ef23d16a2fbe33e3fce5b3 SHA-256: 1828339afcfe5f333dbca5e0773fda5583dccf9876426dc61ab8535b96edc729
96 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one specifically appearing in the document body and associated with a lure about real estate agents. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/123?utm_term=books+on+how+to+become+a+real+estate+agent PDF link annotation
    • http://zutatowatipo.mywebcommunity.org/jipowirije.pdfIn PDF document text
    • https://cdn.sqhk.co/jixuvepabu/gdd6mhe/2020_election_map_538.pdfIn PDF document text
    • https://cdn.sqhk.co/ninivaxibab/8Wgcifg/ludo_king_cheats_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/desixurate/nhizThK/70257530260.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/jgj8jdL/68954094927.pdfIn PDF document text
    • https://cdn.sqhk.co/rajexizeba/2hgghSe/43145398665.pdfIn PDF document text
    • http://majikok.mygamesonline.org/16155080569.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/gghaRjj/47222938341.pdfIn PDF document text
    • https://cdn.sqhk.co/wavoperusina/jj3bE2b/41157403387.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefima/ggphjSl/cannon_shooter_game.pdfIn PDF document text
    • https://cdn.sqhk.co/labokezugumu/hicicih/92192197595.pdfIn PDF document text
    • https://cdn.sqhk.co/kimefutif/e4igG71/95957269918.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzaxepigi/aaiYIgd/argentina_football_association_instagram.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/remeranexe/autodesk_maya_2018_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/professional_cv_template_free_with_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/zowuxurok.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/jatej.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E2 5300 bytes
SHA-256: 1d3507212a330b0d5d9cfdb236caca3c398efca23e016f1ab0437941c6cf0f25
font_01_sfnt_off0000fbc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC3 10868 bytes
SHA-256: f83378383b8087c3710ef1bf21b683ec98c4adc3f8ea4db66289607aebb85f06
font_02_sfnt_off000120b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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