Malicious PDF — malware analysis report

Static analysis result for SHA-256 06618825ce0735df…

MALICIOUS

PDF

76.0 KB Created: 2021-03-14 14:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: bfe2d535cc245033a97751e14883baa0 SHA-1: 1113be57ec550969120f6966ccec9b9524ec27b7 SHA-256: 06618825ce0735dfe5eb8851de01699ea74be5a11d7b4095cfc9a5531d3fb5f7
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to appear as search results for a 'Radio shack plug'n power home security system'. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' strongly indicate a malicious intent, likely phishing or malware distribution. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/wix?keyword=radio+shack+plug%2527+n+power+home+security+system PDF link annotation
    • https://fetevosave.weebly.com/uploads/1/3/1/4/131438058/nazafajizogawa_pativ_felazoj_tamofurala.pdfIn PDF document text
    • http://consumer-data-protection-bureau.com/97280943376d7ysj.pdfIn PDF document text
    • https://vukajikabazaxeg.weebly.com/uploads/1/3/4/7/134711597/52fbd772e79d876.pdfIn PDF document text
    • http://santand-es.com/22325009225tmukm.pdfIn PDF document text
    • https://jutewalezozapon.weebly.com/uploads/1/3/4/0/134016751/maguxemofov.pdfIn PDF document text
    • https://tukuboxux.weebly.com/uploads/1/3/4/5/134510407/c7d8ea4.pdfIn PDF document text
    • https://lupemofuxuxutuj.weebly.com/uploads/1/3/1/3/131383332/sinawusuvido.pdfIn PDF document text
    • http://1xbet-registrat.site/engineering_calculation_paper_templatetoiuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wulekugigewipo.epizy.com/zexaxazexetupidupoka.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/fidelity_international_small_cap_fact_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/synonym_for_formal_dress.pdfIn PDF document text
    • http://daparetefofan.epizy.com/51480299803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5db1e386-4c04-4578-b3cf-d6bd3db1f307/77037886746.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/android_adb_how_to_install_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/joxofefozejajidepojopeli.pdfIn PDF document text
    • http://segixiw.epizy.com/financial_reporting_and_analysis_13th_edition_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/web_design_templates_css_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9a82226-ba01-4d24-a10d-5bd23095b340/le_petit_nicolas_book_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/ma_rmv_motorcycle_permit_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/fortescue_metals_group_annual_report_2017.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_off0000e905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE905 5788 bytes
SHA-256: 2f9a37bdedc271ac1399a0e02dd983e30deb66502fdeb77297153d07953dd647
font_01_sfnt_off0000fcb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB4 11052 bytes
SHA-256: b2f89f200c25f5bc190b364bd59be103d94f62dd7d86cde0cb4a6307be3f1a6f

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