Malicious PDF — malware analysis report

Static analysis result for SHA-256 860eca23449d95ba…

MALICIOUS

PDF

153.3 KB Created: 2020-12-01 03:53:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 75279c3d8178829b533b3a68384b1995 SHA-1: 5839dc67cb3a391140c2f47cc5dd01d118c1c382 SHA-256: 860eca23449d95ba9b3f3764fc6620e1da3cbc4ec5728f78b1960e0c42a7823a
112 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating an urgency lure and an embedded URI pointing to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL is likely used to deliver a second-stage payload or redirect the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://traffset.ru/123?utm_term=lakeland+college+mattoon+il+jobs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446649/normal_5fa162c1e9a68.pdfIn PDF document text
    • https://kutujenedida.weebly.com/uploads/1/3/4/7/134759749/mupedejemiraw-gigawedugosubo-jerijavew-dajubu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372383/normal_5fc17c1db7fa8.pdfIn PDF document text
    • https://xisiwazebisa.weebly.com/uploads/1/3/4/7/134758569/4111619.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/2223941.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/zesotat/cannibals_and_missionaries_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/popagexexoza/67258295422.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b921340a-e1b2-40d2-bc6a-5be48018ffc5/xivewusasarukokarim.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/elk_lake_school_district_county.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11bf8935-a5d9-4ecb-a37c-75ce619a45cd/christian_prayer_book.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/bingo_sheets_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/kovigejira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de27e3fe-e032-43a6-90a4-9223fb6e3020/49560968506.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20653 5384 bytes
SHA-256: 7dcd7bd1a11b04ea9354d89cf2e74a5c7f718f25fe6cfd843ba6e39ad40b3347
font_01_sfnt_off0002189d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2189D 11768 bytes
SHA-256: 7e34608a547c99a71ab13a248ea786264c4e11c53531daea0949882400906e16
font_02_sfnt_off000240c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x240C5 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67

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