Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb7c2293ff64178…

MALICIOUS

PDF

83.4 KB Created: 2020-11-26 04:21:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5950df75d8bc6fec852717aaaeac1a5a SHA-1: dca1205a2c80107f84bd54d5f1b7985b1d52c84b SHA-256: 0eb7c2293ff64178922b7cfbbd527517257439c8d775677cce23fcf12aa38683
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffe.ru/123?utm_term=dynamic+array+java+program PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384472/normal_5f8dbad3383c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375518/normal_5fac16b496bc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380382/normal_5f8c3b2b2f513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410986/normal_5fa124983758a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_5f9f94c24bda0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421040/normal_5faf8b3dc185e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/description_of_candy_in_of_mice_and_men.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab9ba9a3-142d-40d7-8478-940138c15f76/84851842240.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/985aa57c-b1ca-438a-9957-0e3029d2bbd6/invicta_watches_batteries.pdfIn PDF document text
    • https://s3.amazonaws.com/naramuro/dewikoxenasibubemojex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a741fafd-9dc4-47ef-9c72-6b20acc9ffab/85585264964.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19c8d0ad-d567-4f55-b4fc-685d988b9f02/renaissance_technologies_profits.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/31023267767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/560d75e8-d719-4edd-874d-1b0e0bba87d5/portafolio_de_evidencias_segun_autores.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/vietnam_food_and_beverage_industry_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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001117e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1117E 27240 bytes
SHA-256: 9d2d845c26062f8f3206e77a75f18269816c7032a83429ee78ff95b12e172869
font_00_sfnt_off0000db8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8D 5280 bytes
SHA-256: 8816226dbd8223689683c2f210451adc3d012f7c99f4771500a35a76c9b62853
font_01_sfnt_off0000ed8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8E 10404 bytes
SHA-256: 93881fc9bd5552a6e0cac66765697f45231c2f7e9cf150a3b670838f23e706dc

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