Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d844eaed93e1bbf…

MALICIOUS

PDF

73.5 KB Created: 2020-11-24 09:44:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7bbb572b7c01457e87136599b7cf64b3 SHA-1: d9998e8a07df117922687e925f9574a2f2ac3899 SHA-256: 1d844eaed93e1bbf03ad229c074170e59c12bd4a2cf544fe144e3192a5303477
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 0.9998

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://trafftec.ru/strik?utm_term=vis+a+vis+french+textbook+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f92d7a484135.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378149/normal_5f8da39a9db49.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/susopuzupure/90779385558.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/fire_fury_corps.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/xusazufulavemizogime.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/6498602941.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/boost_program_options_required.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a6b439a-2434-4b6e-aea3-a132ade1bdd8/82270988633.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/demande_d_aide_au_logement_caf_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aabea993-d7fa-4936-a035-169d4990a619/21519456900.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a3131dc-9ead-4753-9a2d-cfccf0b029ee/zoran.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5df1cf3b-0871-4fe9-8201-43d08e376e34/rajini_murugan_chella_kutty_song_fre.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/watch_movies_123.4u.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/eric_braeden_wife_age.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_off0000e0b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B0 5508 bytes
SHA-256: dc45b5c70621a530531cae540c4d53687f4655ce1d294926fbe828a5f0029c06
font_01_sfnt_off0000f370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF370 11584 bytes
SHA-256: 9c37ab90ba760cb84d92ccada315482471c20da5876d31098e7ae191c7f259bf