Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e11a9d75646e0c4…

MALICIOUS

PDF

78.0 KB Created: 2020-12-28 19:33:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6699256b35a1622387c77cb051b79fec SHA-1: ea0c686a7e9d5ab4b56cf527ea5070fa540f8a71 SHA-256: 5e11a9d75646e0c4e1676f43bbc6e658cc356cdb14e5b9584ecacd3e82e86e83
96 Risk Score

Malware Insights

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

The PDF contains embedded URIs that point to external websites, identified by the PDF_URI heuristic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of embedded URLs suggests an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?utm_term=adios+america+ann+coulter+pdf PDF link annotation
    • https://cdn.sqhk.co/jasowipe/Tss9AYs/nugejosefezezon.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/a87958.pdfIn PDF document text
    • https://cdn.sqhk.co/muvetowiripa/idfdFu4/kidcity_wwe_2k19_dad_vs_son.pdfIn PDF document text
    • https://cdn.sqhk.co/mafokesaxuvi/QbgcpP2/world_war_2_history_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dekaroku/eghhchj/overwatch_reaper_costume_walmart.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444648/normal_5fd8a132af684.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6499c956-e959-4a85-9b22-62dbfabba894/bufiwifuwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbe7469f-ad1f-470c-af08-76545115d1ea/14241147447.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/carolina_liar_i_m_not_over.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdc4692e-0a4a-4ed4-b1b0-f9dd85dde6db/73656365059.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/kenenitoragonidorutemedi.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/alimentos_ricos_en_carotenoides.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/sijakobuzexotuzidiv.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/67578581660.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/941dae3e-dc03-48cd-99b1-2ae4dc03af1f/mountain_bike_focus_usate.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_off0000ef68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF68 5288 bytes
SHA-256: c524a76f071353ba0363484f5d690eab206f0c18fbcfa67dfa582c35c142c83c
font_01_sfnt_off0001014f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1014F 13108 bytes
SHA-256: fcbaca45c5ef94f61b2e44684f8bb93e20f75d26790b750ff6d979af8353ca5f

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