Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd06d6f97f65234…

MALICIOUS

PDF

188.7 KB Created: 2021-03-25 11:51:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 47fa3120f0c1caca0ded16f7798fe701 SHA-1: bddced35995cda08bf99cf050f36fcbb89de38cd SHA-256: 8fd06d6f97f652349017d13a9f28d20ef5530d64b8b9b0e3ff40b5f535f855f8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of external links within the PDF structure is a common tactic for delivering malicious content or redirecting users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/award?keyword=metal+forming+process+notes+pdf PDF link annotation
    • http://soldonlakewood.com/sixojewapafiycw4.pdfIn PDF document text
    • http://bella24.xyz/rusuberenoduwekolerimenaubtia.pdfIn PDF document text
    • http://rubisteq.online/how_to_setup_cisco_dpc3825jwcci.pdfIn PDF document text
    • http://excellent-spb.ru/21696675024d6psq.pdfIn PDF document text
    • http://aycotoro5.xyz/simplifying_fractions_to_lowest_terms_worksheetw9pmw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://85d2c5a2-fc31-4f76-86b4-4ebe2abe2bf4.filesusr.com/ugd/a8cc01_76e44f45b0194fa792b64f501e42fa76.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rowubunak/detogow.pdfIn PDF document text
    • https://fec450ea-b80f-4746-b851-35139cc02de5.filesusr.com/ugd/53a83b_54c94ded970c462eaf70f55df1e94148.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/suximawo/povatewuwovopejexojodarat.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/mokegigerawexolizi.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/kuzuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f861236f-aecc-4b55-a537-d39f1a80fee3/what_is_penal_system_definition.pdfIn PDF document text
    • https://f7f2eb1f-4ce6-40bf-b337-6bcc2c9c1a95.filesusr.com/ugd/dc6899_823b5c1922eb40f5af6d2c838af420e3.pdf?index=trueIn PDF document text
    • https://b23183eb-b2e5-455e-bc25-91fac1efd10f.filesusr.com/ugd/cc14e4_824967f7ced54bc7866b2719bbbb3c66.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/lupinamasejomazedokubu.pdfIn PDF document text
    • https://43a2ba88-5de9-465b-b95f-6a4d82f2d06e.filesusr.com/ugd/dcbeda_e1c1c8026ca042d895c8d2c9074ed96b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0255284b-6298-4ad5-bbb1-a40942f867b1/nadodatoxuvomok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b5c318d-71c1-4259-818b-21115c1efa0c/wusevovawujen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a4bd355-b39d-4a4c-82f8-47a97890df1e/jirufidelaxibamokidizexon.pdfIn PDF document text
    • https://8a05da06-75fd-4b4b-8779-f7668a2fa4a0.filesusr.com/ugd/da32d9_1dad33e3ce664f399b560251a53738f6.pdf?index=trueIn PDF document text
    • https://6a543b89-810f-4a07-932c-4cc129fc401a.filesusr.com/ugd/1e5726_9b04a4efa4b449dfaf577e00c152e893.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_off0002a2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2E6 5480 bytes
SHA-256: d638128c1a3b0f5042efe17b39d8fc5adcb744576e24acf7d4d194185b975326
font_01_sfnt_off0002b583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B583 15348 bytes
SHA-256: 78ec0a652818db31f03ce1f4ed77af7e4d27f30a704c4cce808e6fafc4e9ac5e

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