Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5a67d9ef5c92ea6…

MALICIOUS

PDF

77.3 KB Created: 2021-03-11 19:08:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 33495325a803638df3fcc51b166c07e2 SHA-1: 19336ac466b55ad4dc26df0053a28632e2ad0c4d SHA-256: e5a67d9ef5c92ea6dd32e871c2dfdecbb60c10d3ce80e41e605a6b61947d1808
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/award?keyword=free+monthly+budget+planner+pdf PDF link annotation
    • https://zitolibozix.weebly.com/uploads/1/3/4/0/134040523/tezawizup-vinum-zuzopa.pdfIn PDF document text
    • http://bachanalytics.com/fanarubuxce579.pdfIn PDF document text
    • http://idealica-official-it.website/does_the_post_office_have_passport_formstrtt2.pdfIn PDF document text
    • https://kuwuxegizeduki.weebly.com/uploads/1/3/2/6/132695805/zizobopis.pdfIn PDF document text
    • https://fupebabo.weebly.com/uploads/1/3/4/6/134601971/8386242.pdfIn PDF document text
    • http://kekebum.22web.org/o_que__uniforme_e_roupa.pdfIn PDF document text
    • https://xanusikufugab.weebly.com/uploads/1/3/4/3/134371049/sufejiremavojage.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_601b34d71933d.pdfIn PDF document text
    • https://cdn.sqhk.co/pulafefer/bgeiclb/jegasevafoge.pdfIn PDF document text
    • http://golosa-spasibo.ru/ramexatixenadik06hw.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/ghzjeNF/moto_vlog_brasil_hack.pdfIn PDF document text
    • https://zekilunadaxidub.weebly.com/uploads/1/3/4/6/134631079/fupevasudere.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472188/normal_603c61501b0b0.pdfIn PDF document text
    • http://dress-russia.ru/sistema_endocrino_hormonas_y_su_funcion19nh9.pdfIn PDF document text
    • http://hook-up.fun/48_laws_of_power_hardcoverps132.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/xukanomarexumu/16525799809.pdfIn PDF document text
    • http://vugugevijoxudi.rf.gd/bintulu_port_information.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/frappe_application_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/add_and_subtract_unlike_fractions_worksheet_grade_7.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/annadata_bengali_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/2160769693.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_off0000f07b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07B 5472 bytes
SHA-256: 636e04c6b8e68255e6784f4e6b0c7a0e927732310ba9123d92e72e84295baf3e
font_01_sfnt_off000102f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F6 10876 bytes
SHA-256: a82de55a13a93d69d464dba790609691350744f30586b44cf535c3f207666392

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