Malicious PDF — malware analysis report

Static analysis result for SHA-256 097316a1bbff7b00…

MALICIOUS

PDF

95.6 KB Created: 2021-02-28 09:25:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: eec9cb83148a824a38b94c5482d248df SHA-1: 70d735ac36e87cef47e138658ca917f86ddddb22 SHA-256: 097316a1bbff7b00f8c1c3d3a3694cfa2e84264a9cc88931a069f62a66102893
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/award?keyword=wu+tang+collection+-+kung+fu+movies+in+english PDF link annotation
    • http://raxewaponoxiv.mygamesonline.org/how_to_use_ipad_for_teaching.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413973/normal_5fe637818a87c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480898/normal_5fc86158cc8ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_6033c2e2c3624.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486220/normal_601c614382a48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451369/normal_5fee5353359dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417212/normal_600fa994308cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374189/normal_60312dcc8adf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416934/normal_6014951f50059.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/punagilelabon/19100996092.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/label_sewing_machine_parts_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/xogifezededudove.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/deutsche_post_ag_annual_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/mevekumefukoler.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_off00013aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AA5 5368 bytes
SHA-256: 31d8a66c921ef622dad22b2aa1ffbabaaa3a26114f20c190d4db8df0ab94010c
font_01_sfnt_off00014ce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CE9 10568 bytes
SHA-256: da8c9ac0d8fc1206919fe85ee3d6256cf62a54739e84f2b050badf9911e82561