Malicious PDF — malware analysis report

Static analysis result for SHA-256 5579528bee0dbac9…

MALICIOUS

PDF

206.0 KB Created: 2021-04-06 15:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 576a0b058994859eddbb1f928756a7fb SHA-1: 8ef0845e84d07a3c2688c519a1eb3e6e7f27349e SHA-256: 5579528bee0dbac925d859f3b4d1cc79024a73f3a2b8fee1d40e67ffbe1589f1
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 0.9966

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://xajibur.ru/award?keyword=pdf+agama+buddha PDF link annotation
    • http://sarhello.online/craftsman_pyt_9000_manualvy3km.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473052/normal_5fda4d39d022b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378620/normal_6002dadc888db.pdfIn PDF document text
    • http://irbestate.ru/numogalofobexaplheg7.pdfIn PDF document text
    • http://govnosiakxws.online/94363512605hd85v.pdfIn PDF document text
    • http://fitdieta.com/370921257436jbhu.pdfIn PDF document text
    • http://brightshopbg.xyz/bts_answer_album_wikinmw4g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421788/normal_5fdaf67d835ca.pdfIn PDF document text
    • https://xasavogo.weebly.com/uploads/1/3/1/8/131856096/rokorusoxil_kiviwotala_patarij.pdfIn PDF document text
    • https://tuvitewolejuxow.weebly.com/uploads/1/3/4/6/134615754/dff736.pdfIn PDF document text
    • https://kizujaxaluw.weebly.com/uploads/1/3/4/3/134393650/8474583.pdfIn PDF document text
    • https://nezozavigarej.weebly.com/uploads/1/3/4/7/134727028/965532.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/woduw-memebelupok-pisugem-vulakor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450160/normal_5fedbf06122cd.pdfIn PDF document text
    • http://kukushpa.fun/cms-1450_claim_formbpf1u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413362/normal_6061a627e2a9c.pdfIn PDF document text
    • http://theboldpantsproject.com/lamborghini_song_320kbps_pagalworlddmrqt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://115777a2-cc0e-4789-9e99-30cf4bdfca1a.filesusr.com/ugd/2b3546_b3da4dd2edeb4e05aa882b84786d8504.pdf?index=trueIn PDF document text
    • https://09235f31-469a-4613-94fc-36d04c1f642a.filesusr.com/ugd/8b6407_8f7871fa3b83469dbb8e84ff9baaab9a.pdf?index=trueIn PDF document text
    • https://692937ca-140d-46b9-9715-018e108c1018.filesusr.com/ugd/2540a5_177ac956160e41ca886674543b80027f.pdf?index=trueIn PDF document text
    • https://e942959e-95af-4115-ab05-a6e38533eaad.filesusr.com/ugd/66f7a0_dc37e5c0ca494d128f404b4bf5bf054e.pdf?index=trueIn 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_off0002e719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E719 5156 bytes
SHA-256: 0e14c717e1eb79d5a4c0af75f17e8f20f5ff0a887f8700dd571b9aa82e46311b
font_01_sfnt_off0002f887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F887 17876 bytes
SHA-256: 3ecd13337abc37e43525499aec33b51acc046d07c02ac61de181484611a96334

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