Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6b3c76ae4257c18…

MALICIOUS

PDF

79.1 KB Created: 2021-04-01 15:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2615278aa97412c70a3200317f36a146 SHA-1: 8d40e2201cecb5e52a8707c46e3f608defcd60fa SHA-256: d6b3c76ae4257c1887c67e7983f3383a0688911b6becf57e70a6b290ac65b855
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-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://mezovuduw.ru/award?keyword=circuito+productivo+de+la+soja+en+argentina+pdf PDF link annotation
    • https://dugesovexu.weebly.com/uploads/1/3/5/3/135321213/cfcea271d778.pdfIn PDF document text
    • http://datiwufirul.medianewsonline.com/curriculum_vitae_gratuit_a_telecharger.pdfIn PDF document text
    • https://gorogonib.weebly.com/uploads/1/3/0/7/130775466/6589579.pdfIn PDF document text
    • http://palopepidek.mypressonline.com/degubesixaraxovo.pdfIn PDF document text
    • https://mavekajokirusap.weebly.com/uploads/1/3/1/4/131437454/kutukesijodo.pdfIn PDF document text
    • http://umdtheatre.ru/6536589156631jbf.pdfIn PDF document text
    • http://matcobzor.ru/ap_stylebook_2018_onlinee9pgt.pdfIn PDF document text
    • http://kellys.space/levedakonugapadexc7xj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xufolat.atwebpages.com/butterball_turkey_fryer_xl_cooking_times.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/japipa.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/12301036604.pdfIn PDF document text
    • http://lofunadex.myartsonline.com/gadasilagavupigunowolur.pdfIn PDF document text
    • https://0c7ecde5-8d52-4b6d-bf00-bcb9beb5fd3c.filesusr.com/ugd/b6f5a5_d742992de2614b939890c868616368e2.pdf?index=trueIn PDF document text
    • https://6c71f620-b6e5-46cc-9e58-526c5f0a7a41.filesusr.com/ugd/1c90dc_e9454aa5f0534720bad93fe1d82d7470.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/farowug/bofakumelikoj.pdfIn PDF document text
    • http://kebenubes.onlinewebshop.net/amar_chitra_katha_collection.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56c2ba5a-7590-428a-9561-031eb46f1c92/81277724678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b27c86d4-70e1-4bec-a72c-bbf65a4a6801/gesevixisegofixiruwikibux.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/71016046500.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_off0000f649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF649 5364 bytes
SHA-256: a425192a93d8a2b2a6a2ed8e80f6109a950b78f2b3a14c96a62cd8d4e6c6e9ff
font_01_sfnt_off000108a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A4 11716 bytes
SHA-256: d90e21b010442bf39898f89972e6d59c550bb8f51d33e858aae66ac3e46a238c

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