Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5e0130401674fb…

MALICIOUS

PDF

67.8 KB Created: 2021-03-17 07:19:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 32fe15dfe05a68d8f2a7e48fd470bf58 SHA-1: bf556c4fa9fbbeb43e72f09422aac91c1ba1c768 SHA-256: 6d5e0130401674fbe41cd86b05d1ffd39e84f5c4cd8572c047a4594f2765d849
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that mimics a search query for a book, likely intended to trick the user into clicking it. The document body is heavily obfuscated, but the presence of external URIs and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://golowaki.ru/wix?keyword=manantiales+en+el+desierto+tomo+2+pdf PDF link annotation
    • http://xepuxupipe.mywebcommunity.org/chhattisgarh_census_report_2020.pdfIn PDF document text
    • http://gemofesane.medianewsonline.com/kenmore_elite_smartheat_quiet_pak_9_specs.pdfIn PDF document text
    • http://nubenukarerira.22web.org/90888080384.pdfIn PDF document text
    • http://guparob.mywebcommunity.org/rigapilifogubizavo.pdfIn PDF document text
    • http://dupozixafe.iblogger.org/jibowodavedoxeri.pdfIn PDF document text
    • http://xosubowavenu.mypressonline.com/64864686216.pdfIn PDF document text
    • http://fumatiw.mypressonline.com/hp_laserjet_p4015x_printer.pdfIn PDF document text
    • http://numufubigefak.iblogger.org/double_bed_flat_sheet_measurements.pdfIn PDF document text
    • http://xuxetosufuzo.getenjoyment.net/gefojikuxexuburifiruw.pdfIn PDF document text
    • http://julivojurukumu.sportsontheweb.net/xusarujonizewasaben.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/purawuma/99823573407.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/041f52db-c7d1-4d7f-a491-045a935526ba/wevelodazarilasaw.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/acer_aspire_5349_bios.pdfIn PDF document text
    • http://ruruwuvatokatal.onlinewebshop.net/whats_the_best_kenwood_head_unit.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/heb_isd_report_card_access.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/dovetail_joint_timber_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/confisses_agostinho_de_hipona.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/31191882878.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/604f4c67-09d5-43be-b009-4ee5d6f0213a/55636737918.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/deadpool_wallpaper_4k_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/zedovubuluko.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/manulife_reits_product_highlight_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/24456203200.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_off0000cbb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB0 5324 bytes
SHA-256: ac368463b9fcbfb4b3d2cec3c6708e62988a9b7952bdfea20edc65235ff22278
font_01_sfnt_off0000ddc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC2 10596 bytes
SHA-256: e0e7ef8c577a1382f227063b8002f91e04b8e84904d741179be0480ab0057167

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