Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea1a73921d04296…

MALICIOUS

PDF

77.2 KB Created: 2021-03-01 06:19:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 00d04279f77fd90db72df87a35a82812 SHA-1: ed08ac3e2becf06b3308c9cbc4000606d5fbd0d4 SHA-256: 6ea1a73921d042967fbfa214da595b4bc9e9edfe67ad899be902a93dba8d9930
164 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 improve search engine rankings, suggesting a phishing or malware distribution scheme. The presence of a 'download' lure and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://resalured.ru/wix?keyword=jagga+jasoos+full+movie+download+hd+720p+free+download PDF link annotation
    • http://docita.fun/update_android_asus_zenfone_max_pro_m16ym4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495526/normal_5fe4a93c2623e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446781/normal_5fee395eb0212.pdfIn PDF document text
    • https://vemosigexirapi.weebly.com/uploads/1/3/4/3/134387812/berirevuve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_600d8214c352b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393761/normal_5ffbd16e4e768.pdfIn PDF document text
    • http://sweetygirl.club/bisibaxusifikubiguzopalur0pqs1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479212/normal_5fdfdbc28b63e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409258/normal_5fd08ecd85bf5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495385/normal_5fcb6c06c88c9.pdfIn PDF document text
    • http://hookup153.online/the_art_of_styling_sentencest9jax.pdfIn PDF document text
    • https://memefuzagimo.weebly.com/uploads/1/3/4/6/134612336/949643.pdfIn PDF document text
    • https://womonejod.weebly.com/uploads/1/3/2/6/132681039/nufuraw_xijavewadevi_tizefixagon_doxuratex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392877/normal_601df3aeb5a20.pdfIn PDF document text
    • http://idealica-ufficiale.site/veda_mantras_telugu_freexwx2q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422385/normal_5ffae5ad35875.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/85220698553rcx0t.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/niwotipugonuvoz/nonconformity_in_dead_poets_society.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/nationalism_and_patriotism_of_filipino.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_off0000ef29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF29 6028 bytes
SHA-256: 33ac932b11053f7a266388ed8e5f21e73dec0f68a176a99672c818e854f7eeee
font_01_sfnt_off000103aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AA 10360 bytes
SHA-256: 8ed61e85e6226478c3cf3c2104eed64e35b8192f4bd8e1beb4ad016bd86367c4

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