Malicious PDF — malware analysis report

Static analysis result for SHA-256 34a4b0c64364ebe6…

MALICIOUS

PDF

83.8 KB Created: 2021-02-21 20:01:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 15d4a42ca09d980c1d83cfd70195d891 SHA-1: 5d39a64db25155fd5a3dc29a1335fd1109093de8 SHA-256: 34a4b0c64364ebe6b4cae8c613812dac81c0a040f44eb433d95c563f4d536a74
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for phishing or malware delivery. No scripts were extracted, but the presence of external URIs and the overall detection profile suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/strik?utm_term=e2+hitch+trunnion PDF link annotation
    • http://bloomwithdeanna.com/zekawumea74cw.pdfIn PDF document text
    • http://goods-amzon.com/4g_lte_router_dwr-_921_manualwotku.pdfIn PDF document text
    • http://uchebnoe.website/idiopathic_thrombocytopenic_purpura_management_guidelines9aeke.pdfIn PDF document text
    • https://cdn.sqhk.co/todusukiraxi/YF1inGB/civil_war_1860_to_1865_timeline.pdfIn PDF document text
    • http://reduslim-sito.site/soligufena1tl5l.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/gKpjhuj/carp_fishing_shop_online_europe.pdfIn PDF document text
    • https://xuzuvakewose.weebly.com/uploads/1/3/1/6/131637797/2bfe5e112ce3ee.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/BH2ypif/personalized_battery_operated_candles_bulk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459792/normal_5fdb5e0f599da.pdfIn PDF document text
    • http://moneyindia.site/81412137636zde5v.pdfIn PDF document text
    • http://obmenkalnr.online/rts_program_2020uhvn0.pdfIn PDF document text
    • http://pinerapidsrr.com/39962341671cdrpb.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/gihbihI/85673961518.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/bibejovixapis/spring_boot_thymeleaf_multiple_template_resolvers.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/lawaji.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/chaos_theory_james_gleick.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/rufemegemexolirukila.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_off00010d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D0E 4556 bytes
SHA-256: 100c75b0bd535f48390c7898a1e1bc5a415a12675bc1cf4c460d83307ae9dd90
font_01_sfnt_off00011c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C90 11164 bytes
SHA-256: 5f9642ac1f5a41d310ac24ad9db460264ab9324b65e43953a938b57dfdb6fdd7

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