Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ab38010a11e18b…

MALICIOUS

PDF

76.9 KB Created: 2021-05-03 06:56:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ddbded1a9d23f0b1bb1a24e0ec67ae00 SHA-1: 7bcb1b6cddc5602ac4dc8f153773cd61ee3f423b SHA-256: 07ab38010a11e18b3ac0e5fa26152b40fafbcd70595bbc626d5daf604397fd4a
126 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan. It contains numerous embedded URLs, with one prominent URL leading to 'dugedepap.ru', suggesting a phishing or malware distribution attempt. The document's content, though partially obscured, appears to be a lure related to device resets, aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dugedepap.ru/strik?utm_term=how+to+reset+a+polycom+phone+to+factory+defaults PDF link annotation
    • https://vajoribenokajug.weebly.com/uploads/1/3/4/7/134713142/e70fa.pdfIn PDF document text
    • https://benevegavevu.weebly.com/uploads/1/3/4/5/134501748/fovoxupufuperilezit.pdfIn PDF document text
    • https://bumopajuri.weebly.com/uploads/1/3/0/9/130969054/mijirutomoxarijo.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/ikjb9hh/38445335593.pdfIn PDF document text
    • https://cdn.sqhk.co/lusimalifa/tjjifhe/20426688753.pdfIn PDF document text
    • http://wuvejabamivul.iblogger.org/apprendre_angularjs_openclassroom.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/CEX8gep/free_lightroom_alternative_ios.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a91e98bf-0626-42d3-8ad0-fda7fb93fc7c/how_to_reboot_a_fios_router.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/dososiwemipefetametisa.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/chaalbaaz_movie_bangla_720p.pdfIn PDF document text
    • http://muweluboxakok.rf.gd/vepepobusavibisogemurejij.pdfIn PDF document text
    • https://a2ae8793-a99f-480d-a3bc-849ef63d34f7.filesusr.com/ugd/cc207a_70cb2b8777d842ac9e4cc0d1820569e4.pdf?index=trueIn PDF document text
    • http://jemejux.epizy.com/tagefuge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3810e9e0-3f65-4f31-8f49-9dca826fb96f/is_greek_religion_still_practiced.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/2d_shapes_worksheets_for_grade_3.pdfIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_3185ba3c480447a1837acb5d96fe087c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6431a79a-15db-49cf-b09a-6f38250ae300/sample_of_chemistry_lab_report.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_off0000ee79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE79 5552 bytes
SHA-256: c8549ace57174464035129299c6b7f2a5d4847e4509281cee46948c090df3b12
font_01_sfnt_off00010147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10147 10332 bytes
SHA-256: 70cd67c973e4aa0079de4a373631f4f7824cf6e2c355e850583c835f7a0c197f

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