Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5cb591be09e43aa…

MALICIOUS

PDF

69.5 KB Created: 2021-03-03 00:38:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 107fb88eaaf3fdb8a5bced64754963fe SHA-1: d04bcd289f8bfc7c98b598ef1979598eead02978 SHA-256: d5cb591be09e43aad88ade3ede07895f4f239a92648842f3335ce7517e50f398
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'baarspo.ru', which is a strong indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=lightly+row+cello PDF link annotation
    • http://vuwimoxit.mygamesonline.org/nuzazozazokoj.pdfIn PDF document text
    • https://cdn.sqhk.co/lenufetimop/19ibDbc/bodivexafabobivumado.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_600d9b49972ca.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwebobit/iijgdjc/audiomack_download_new_music_offline_free.pdfIn PDF document text
    • https://cdn.sqhk.co/muwazubivotu/jjgWicW/stylish_text_apk_old_version.pdfIn PDF document text
    • https://cdn.sqhk.co/kimamena/gj6ttlA/steam_cleaner_walmart_carpet.pdfIn PDF document text
    • http://sosiwawivijomo.scienceontheweb.net/cen_tech_4_in_1_battery_charger_reviews.pdfIn PDF document text
    • http://joritirumag.mypressonline.com/rakowezegusofav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489844/normal_600c80a599cb4.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
    • http://fepetixapokurob.myartsonline.com/mumumam.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/zodoribobiximeditusimef.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/the_chemistry_brand_hyaluronic_concentrate_uk.pdfIn PDF document text
    • http://dofadedivuxira.rf.gd/why_does_my_space_heater_keep_turning_off.pdfIn PDF document text
    • http://zewixezix.epizy.com/kigeruloxakuzuxenuga.pdfIn PDF document text
    • http://fozozip.onlinewebshop.net/vuleranex.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/74313238050.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/rotoxovok.pdfIn PDF document text
    • http://tipixerokofor.epizy.com/banijitawefazak.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/what_are_the_ancient_egyptian_gods_holding.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/najamoburigitu.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_off0000cb29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB29 4492 bytes
SHA-256: df1acf0648bda12c8115b0370fff72ab8adb70be21ee82d46046cd26cb1072bf
font_01_sfnt_off0000da9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9B 9476 bytes
SHA-256: 87d40f1b82cb2eb7f736618638fd4127cbee6b0434f3ac5e5dec3cc745750415
font_02_sfnt_off0000fb1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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