Malicious PDF — malware analysis report

Static analysis result for SHA-256 430ca327f157518c…

MALICIOUS

PDF

75.9 KB Created: 2021-03-21 03:52:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa3f1fba4b3fe4b4bbb30b5b3d64bb52 SHA-1: 6e611ebc64eddc1e8f3718e61b30dce461ef0367 SHA-256: 430ca327f157518c07b75f8e887ed085936949fb02d50e8ada990f1241ba1b01
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to a phishing site, disguised as a setup guide for a Linksys extender. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of external URIs and the overall detection suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://nipisod.ru/strik?utm_term=how+to+setup+linksys+extender+re3000w PDF link annotation
    • http://dakisemakegag.sportsontheweb.net/avatar_comics_imbalance_read_online.pdfIn PDF document text
    • http://lebuvowune.getenjoyment.net/whats_the_fastest_way_to_learn_korean.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463286/normal_6032267373a39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414695/normal_6030e86610b47.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465687/normal_6002957a41538.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421615/normal_5fcd621b7f2c5.pdfIn PDF document text
    • http://guwelureg.22web.org/k_g_f_movie_ringtone_tamil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487413/normal_602496e4cef3f.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/canara_bank_account_transfer_form.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/mesixadelomomo/41372370815.pdfIn PDF document text
    • http://baxujaxifibew.rf.gd/70613325441.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/mathematics_workbook_class_8.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/gunibezuravete.pdfIn PDF document text
    • https://6db1e9a2-4282-4636-8d41-de07325ad911.filesusr.com/ugd/d97b38_6fd09d4dd85b403484a828031f8f3eea.pdf?index=trueIn PDF document text
    • https://d0fd22f1-78bd-4368-960d-2a324028b2bb.filesusr.com/ugd/a4d998_07a1dd4284b84eafa9468370db2a1650.pdf?index=trueIn PDF document text
    • http://wunilos.epizy.com/do_you_capitalize_president_of_a_club.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/cicerone_guide_books.pdfIn PDF document text
    • http://demiwadipojaz.epizy.com/tavoropos.pdfIn PDF document text
    • http://zukusuvajijip.epizy.com/70501464206.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/37667113051.pdfIn PDF document text
    • http://sepusuvom.epizy.com/9428873448.pdfIn PDF document text
    • http://solugivewatewa.myartsonline.com/fibodawokef.pdfIn PDF document text
    • https://44879a12-c10a-431c-a98a-7de142752d0f.filesusr.com/ugd/bb4607_9a569ba0b7284bcdb0c8c01cb96b0f55.pdf?index=trueIn 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_off0000ec51.bin
2a9285dc5d26d083b81501a8b5eac66b3e11b14f90f84c50c8bed8380d30557f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC51 5336 bytes
font_01_sfnt_off0000fea2.bin
d1c15ca007b63c367b6dba5578349d1ad70ba3c709bed0c7a027cb5706797278		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA2 10228 bytes

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