Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84cf7792eeaf4c7…

MALICIOUS

PDF

81.4 KB Created: 2020-11-17 06:07:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2b87eebaa640aaea275006d2a9302349 SHA-1: be35115bd81b335639cc2e543a5a160ce6b43947 SHA-256: e84cf7792eeaf4c71ad6e5af0bbea14bb795680cbce930faf7f24c7f652fb474
96 Risk Score

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 0.9997

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://trafffi.ru/123?utm_term=textbook+passage+cortes+and+moctezuma+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366961/normal_5f8e983928a59.pdfIn PDF document text
    • https://pasazobunev.weebly.com/uploads/1/3/4/6/134670772/f00c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456699/normal_5fa2fdba929ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383138/normal_5f9134f6b6ca8.pdfIn PDF document text
    • https://xorozatu.weebly.com/uploads/1/3/4/4/134461248/pezaxidad-mibexefupum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394060/normal_5fa316e8c3123.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422386/normal_5fa047091ef62.pdfIn PDF document text
    • https://kuwofepex.weebly.com/uploads/1/3/2/7/132740654/rimawutevotom_bubiragageka.pdfIn PDF document text
    • https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/febexo.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/subud/spanish_to_english_worksheets_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/ludirazod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/916ccdd4-d56d-443f-8b1a-f12232e030a7/zawepopuzaxexosubonuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea68be9e-c743-43ca-b18d-55742f696a3e/american_republic_to_1877_glencoe_online_quizzes.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE54 5724 bytes
SHA-256: 46b8473cfd3bc3993b6fd8983e6bb75bd5b07fd91f2156a9a1659588a689b273
font_01_sfnt_off000111d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D6 11388 bytes
SHA-256: d30f215cf8ab7b89f2f2a9217c8fe4d008e07cb85308e69dddc5aa2be8db9ec6