Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0a46ab9d24fd1d3…

MALICIOUS

PDF

76.7 KB Created: 2021-03-04 06:00:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 5edbcc8198b54fdb341d3441eca23978 SHA-1: 812c95141447c55e08726ff22520f68103f876b5 SHA-256: d0a46ab9d24fd1d3070db6add979f652ff4b5c0bfade02f97af1110b66b4839a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which are SEO-optimized and point to other PDF documents, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious content. While no scripts were explicitly extracted, the PDF structure and numerous external URIs are indicative of malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=whistleblower+complaint+audio+saskia PDF link annotation
    • https://raxabebawozovi.weebly.com/uploads/1/3/4/3/134311701/d2ab7d04eb93.pdfIn PDF document text
    • http://mozodulo.iblogger.org/hey_jude_album_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/gjhjfaQ/stickman_destruction_3_epic.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408984/normal_60336014e077b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481072/normal_5fee54949b379.pdfIn PDF document text
    • https://wavafawiwex.weebly.com/uploads/1/3/2/8/132815000/b5d26.pdfIn PDF document text
    • https://sevenunoxesu.weebly.com/uploads/1/3/4/3/134341304/xuzine.pdfIn PDF document text
    • https://narigepafosi.weebly.com/uploads/1/3/4/4/134471788/ritepuxawozalavi.pdfIn PDF document text
    • http://vuruvuzivad.22web.org/55135416915.pdfIn PDF document text
    • https://cdn.sqhk.co/momogajopi/9ZLsfhj/94306144091.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bujisovi.epizy.com/fenavelilatujavav.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/how_to_write_a_skills_summary_for_a_resume.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/why_does_my_dell_wireless_keyboard_stop_working.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/vscode_code_formatter_php.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/camping_merit_badge_worksheet_word_document.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/kiwezazeperopolak.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/one_piece_bounty_rush_english_version.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/travel_guidebook_examples.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_off0000de6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6D 5504 bytes
SHA-256: b66c2f4506ed4871d4c37b17c242027aef376f9ca663f7cfb7593b3204f32526
font_01_sfnt_off0000f0ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FF 11436 bytes
SHA-256: 8647c09787b91f9857ffa5f16bf01aa8d6a5aef674fb529841c05940c80f16de
font_02_sfnt_off000116ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116EC 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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