Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf9f7d8cd0f823c3…

MALICIOUS

PDF

78.5 KB Created: 2021-04-03 02:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 295d82d60c1766d80d9c3e5fcf952fab SHA-1: ed881e633000be77c06be1adebaf5a6a77c0737e SHA-256: bf9f7d8cd0f823c371ec82603cbcfa636850eb2cea69ea5fa6d4d9637ef90c26
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 0.9994

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://ponafet.ru/strik?utm_term=chocolate+and+cream+dapple+long+haired+dachshund PDF link annotation
    • https://sixixufur.weebly.com/uploads/1/3/2/3/132303163/3724876.pdfIn PDF document text
    • http://kifojex.22web.org/belajar_excel_pemula.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403814/normal_60611d1a8a448.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385848/normal_6043bf1bcc7a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392237/normal_5ffabddea60ad.pdfIn PDF document text
    • https://wukisusu.weebly.com/uploads/1/3/2/6/132696029/82692d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466679/normal_5fd67a952351d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_605d032f53bc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384046/normal_602fc79be5bd0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483335/normal_60032effdd615.pdfIn PDF document text
    • https://zofifonanofanap.weebly.com/uploads/1/3/4/8/134876640/joziwe-texemiruz-kajijiro-zasaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375907/normal_5fdad429971e2.pdfIn PDF document text
    • https://xekijepomi.weebly.com/uploads/1/3/4/5/134508866/xifesip-daxava.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/lusabifef/bringing_up_bates_season_7_episode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/posedatomigexikibiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/igcse_biology_coursebook_answers.pdfIn PDF document text
    • http://tidovikuvam.epizy.com/language_thought_and_reality_whorf.pdfIn PDF document text
    • http://zasemamol.rf.gd/57236039223.pdfIn PDF document text
    • http://buwolewunajoj.rf.gd/72390771309.pdfIn PDF document text
    • https://72a23b54-95c1-47c0-80d6-f7b1310faeb8.filesusr.com/ugd/65b209_2ba77c2a189b4011b8f4332005f07c6f.pdf?index=trueIn PDF document text
    • https://cd9ed9ec-87d1-42be-9198-0b2de6c1db4d.filesusr.com/ugd/158fb9_2232c4b18a1947bc807ede2ba43bc7b9.pdf?index=trueIn PDF document text
    • https://52ed6390-a5c1-4502-9f93-599cf6d98ad1.filesusr.com/ugd/f7fbc8_408367a78ca04c8ba750f98ad2156a04.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/kuximoluf.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_off0000f606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF606 5392 bytes
SHA-256: 34567b7966c176d1e33cb97a6e7131e27fb5d13049cd7c02d5b52227aa30f6e2
font_01_sfnt_off00010828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10828 10592 bytes
SHA-256: f60b0a24a730bfff2bf8fd1dbdddd20cc79f5bcbb1cfee952e4a61c2460f50e0

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