Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6d022bdda33282…

MALICIOUS

PDF

242.1 KB Created: 2021-03-18 06:56:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: c772384d7d5f1c1a34d702bc9b200060 SHA-1: 248edab985556ee25ba521060b88a89f8ad593e8 SHA-256: db6d022bdda33282b7409f97f4a367fe140769d1b5a69fe9956db2e9ba3abf16
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely as part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to lead the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9850

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://midufefew.ru/wix?keyword=mk+hamilton+bag PDF link annotation
    • https://vapurexox.weebly.com/uploads/1/3/4/8/134865026/paliwetovugamiz.pdfIn PDF document text
    • https://balabirow.weebly.com/uploads/1/3/4/6/134690292/2a7c105.pdfIn PDF document text
    • https://bobuwazubugomu.weebly.com/uploads/1/3/4/4/134494734/9865588.pdfIn PDF document text
    • http://firstdoctor.xyz/35718547430t509g.pdfIn PDF document text
    • http://vunelipu.iblogger.org/guwewetupibi.pdfIn PDF document text
    • http://homeolimp.com/xulovonakugojuvavtfe4k.pdfIn PDF document text
    • http://nububezobuto.22web.org/kimubumepodupubasugenugop.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/wuxijuzugibasavip.pdfIn PDF document text
    • http://smartycredit.info/41869178551b9hek.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/3665ed5b-9e65-4df5-9150-87ef3fdec362/oil_gas_ratio_mercury_2_stroke_outboard_motor.pdfIn PDF document text
    • http://lusajafimaneru.myartsonline.com/pamusubaxuvewudiruzipupam.pdfIn PDF document text
    • http://radujexoxetapil.epizy.com/jadatitiferor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d236d6e-f2ec-4363-bdfa-b37d1b2cf8dc/little_red_riding_hood_book_author.pdfIn PDF document text
    • http://vijofozuretu.rf.gd/how_to_disable_unofficial_skyrim_patch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef89563f-e7bc-4440-b72d-68aa0284d4b5/wixesemupagugadomoniveso.pdfIn PDF document text
    • http://rewerikipij.rf.gd/who_is_false_god_about.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca8c5174-4342-4100-a046-f0ec0a363fe0/95365519973.pdfIn PDF document text
    • http://gotenekopibijo.epizy.com/zevukasogevowarutegukuwif.pdfIn PDF document text
    • http://lisotabisalak.epizy.com/jakexatagidusanurito.pdfIn PDF document text
    • http://fazafowunop.epizy.com/frozen_margarita_nutritional_information.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0001005a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1005A 207716 bytes
SHA-256: 54f4ed7b4c3333198bee0ae1845cd7c3d5ac95b876f5f8b1fe90022a6e748b28
font_01_sfnt_off000361cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x361CF 5032 bytes
SHA-256: 9ab872b399c1c7da6a19cf01c4ce2e8be6ad7baeca6969d0d408748de80fbc28
font_02_sfnt_off000372d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x372D4 2116 bytes
SHA-256: c0b080a3303b8e939d585112c399c02879d5f0d732e84daf845a916286948345
font_03_sfnt_off00037c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37C80 10808 bytes
SHA-256: f8b2c498185a75cf41d3e9ae7dbc565549fe71408d387206d02f79204230d967
font_04_sfnt_off0003a19b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A19B 16748 bytes
SHA-256: c26e7fc1c3be5ea93116fd4109adc31f650c124f2a2332b6e4970be840827f63