Malicious PDF — malware analysis report

Static analysis result for SHA-256 17bf5e98730f27c1…

MALICIOUS

PDF

75.5 KB Created: 2021-03-23 07:58:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: ebe43ba2c239fc25484bc5fb7630e315 SHA-1: 8c9db500acd2ebf166457eae62528cacc2cff38e SHA-256: 17bf5e98730f27c10fa3eef30e068506315c474c3785dbd9d801434050685263
96 Risk Score

Malware Insights

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

The 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 'https://zajinet.ru/wix?keyword=classical+myth+powell+pdf', suggesting a phishing lure. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

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://zajinet.ru/wix?keyword=classical+myth+powell+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4497358/normal_5fd04e3164898.pdfIn PDF document text
    • http://creditstar-kabinet.com/22549371737u49ex.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuzivo/wrKhagh/94436226441.pdfIn PDF document text
    • http://stavki-na-sport.site/36830389405oan7x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465908/normal_5febe8b724e34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419847/normal_5fe3431118593.pdfIn PDF document text
    • http://covidcapsule.world/essay_writing_topics_with_answers3yfa4.pdfIn PDF document text
    • http://magic-spring.com/pavawuwizojiletiwavofduxg8.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/eJjbzOe/jasukupusijakezuzizib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369182/normal_5ff89bb788a75.pdfIn PDF document text
    • http://fruct.space/rodovosozosijadimotezfjulk.pdfIn PDF document text
    • https://xoxigukot.weebly.com/uploads/1/3/4/8/134861038/8010696.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449421/normal_601207dac7531.pdfIn PDF document text
    • http://meetsol.xyz/bootable_usb_windows_10_software_free4z36n.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovixovuti/xhbqQii/39548411683.pdfIn PDF document text
    • http://help-verification.com/ladulukud0753.pdfIn PDF document text
    • http://rollernefrit.xyz/extra_deep_pocket_queen_size_fitted_sheetsauvey.pdfIn PDF document text
    • http://esclick.pro/729077919090r4o6.pdfIn PDF document text
    • https://zeradukiw.weebly.com/uploads/1/3/4/8/134883462/2594340.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ea64ff4c-51e6-4efc-8cc1-399682447901.filesusr.com/ugd/961f18_43db316149594813bba2a5cbca6c8fa1.pdf?index=trueIn PDF document text
    • https://f815f12b-539f-4060-8ed9-abd2caada31b.filesusr.com/ugd/ceb2e8_227c841b29a24955b933464ca9285ac1.pdf?index=trueIn PDF document text
    • https://caf0f927-206f-4b4e-aa34-0dd3da53679b.filesusr.com/ugd/83d902_851372d983ab4346a940dea4d23e842d.pdf?index=trueIn 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_off0000e9c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C9 5400 bytes
SHA-256: 96e2bcb38a992aa4f5c2d2ce5cb987421292e426d96f35d94e80d31d78dc2322
font_01_sfnt_off0000fc17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC17 10740 bytes
SHA-256: a5396e90a30be45ede67fed014a0fba98b128a2b874e912759a67267c45a2fad

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