Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c46311f45bdadf5…

MALICIOUS

PDF

98.7 KB Created: 2021-05-29 09:55:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 9fdbdff793c0ad7556dd107e553363a1 SHA-1: 59389feec6f2dc0a287b5d68d4b6163ce2922256 SHA-256: 6c46311f45bdadf55c7065807195e95699fa85713480da7098f3df695030dbf7
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/strik?utm_term=rompiendo+las+cadenas+neil+anderson+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424036/normal_60691aa4b5243.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403429/normal_604476f566cca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366647/normal_5fe7842252824.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480580/normal_60175061e28de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380890/normal_604d240c202c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392193/normal_60663b5f438f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414488/normal_5fd34e3043e69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413113/normal_6029c4424645e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382974/normal_60482619c916a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468255/normal_5fccb95ddc614.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490539/normal_6062fbfc97b15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484995/normal_60148f4d131c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497685/normal_601ef543b7f4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421460/normal_60216a3fddb05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472486/normal_605625ae412ec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b141e34f-18e0-4799-8317-770aeaa48a4c/71164159507.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17c91512-45cc-4f61-bc54-3d1e93b13c7b/robert_greene_quotes_twitter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3a33493-6f40-415e-bce8-b52b2f72715d/how_to_replace_liftmaster_garage_door_opener_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f85329cc-66b8-4b0f-a882-47d0a37c25eb/37638399108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d8b58ec-8f31-4cdb-8df9-90b0c90c217a/asp.net_core_tutorialspoint.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91807634-f704-4518-b05e-e4d25f73918f/a_river_runs_through_it_trailer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001342c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1342C 5016 bytes
SHA-256: 8c6ca842fa6b314f974bc337b0f68d8a80b258c7548f9b55d961bd781bb0ae45
font_01_sfnt_off00014515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14515 12952 bytes
SHA-256: 65e6a880386cb795c2b14f66f480ceff4e5bfd87b162d92b6d91ce894b4abc2e
font_02_sfnt_off00016efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16EFC 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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