Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba7a984f1181cfd7…

MALICIOUS

PDF

269.4 KB Created: 2020-11-24 22:56:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c61a5abe2980796f4559d2bce530ddf7 SHA-1: 16b03d2f6885429d0aeb989e0afd97ff8ba3b942 SHA-256: ba7a984f1181cfd7828b5583be9fb58b92369099c4a473457aba2b66219fff7a
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 0.9854

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/strik?utm_term=python+print+list+vertically PDF link annotation
    • https://dumetokewip.weebly.com/uploads/1/3/4/3/134394823/jifikafugawi-bujizarafepatu-misasek-sadokikez.pdfIn PDF document text
    • https://pigaxusimip.weebly.com/uploads/1/3/4/5/134584788/7729259.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426572/normal_5fb405269aacf.pdfIn PDF document text
    • https://laxigozi.weebly.com/uploads/1/3/4/3/134361341/pofime_jadojobafekibu_zodeg.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/jogidop-zufokasugasefu.pdfIn PDF document text
    • https://purolejomi.weebly.com/uploads/1/3/0/7/130776639/5074942.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389570/normal_5fbc565872c00.pdfIn PDF document text
    • https://bikewodeganesu.weebly.com/uploads/1/3/4/5/134596115/e473bb10ece6.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/zujulusejima-lixododibogar-wotoral-vegatusuwafa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/20857ff2-eca1-4af8-81fb-45fa10347c45/lolega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e2b6550-8a22-4ae1-bdec-c760854c2948/space_matrix_blank.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/zekimokiwijuraw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32a205d2-ff03-4067-b85c-d68c4ad0faa0/54265731127.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/baby_pool_floatie_with_shade.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_off0003cab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CAB2 8704 bytes
SHA-256: 17b0463b409f2dabfb0230964663bf0b1e26caea8bc572d072c56d7ba3790730
font_01_sfnt_off0003e814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E814 5184 bytes
SHA-256: 0eb27093f3fcac03f2df8be4012cdb203a11b911b03789a83100d5a39cef4fca
font_02_sfnt_off0003f9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F9C1 14052 bytes
SHA-256: e933469cde225ef3e90a1ac7878d07730d275e3724c0bb6a4d9bd912808384bd

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