Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca01b04c0129c0d9…

MALICIOUS

PDF

79.1 KB Created: 2021-03-22 17:36:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b555ca08e92d40f8479f7a21a73afdc8 SHA-1: 92614fd4c2160ead4c7b4833367fb767c0766337 SHA-256: ca01b04c0129c0d9f99a43e74f48e9fdd42074181f5bea2ae064314d0d29dc00
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/123?utm_term=brawl+stars+mod+apk+14.+118+android PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421462/normal_5ff20fd87f8e2.pdfIn PDF document text
    • https://cdn.sqhk.co/rerunaropiz/jfy7G7l/gagavonezavokej.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/9jibcvW/sefoto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377938/normal_6053e96f152c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413458/normal_604f31efc7009.pdfIn PDF document text
    • http://boravaximuxo.iblogger.org/68084985778.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446035/normal_5fdb25a9362f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418199/normal_600d0e2abb1c2.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/ryjfxih/servpro_office_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491175/normal_5fe542279a6e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418746/normal_6039a96c3f062.pdfIn PDF document text
    • http://faxejurimuzuret.22web.org/94222541278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390323/normal_601b102ca230e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365576/normal_5ff552e6adcb0.pdfIn PDF document text
    • https://cdn.sqhk.co/wifavizen/pDYWic9/pamimomuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_6033453aabab6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_6027aacd71a2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369329/normal_5fe5c1bc50405.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/a22ed0b3-3cef-4181-8e0a-e155fdd8b655/polaris_high_lifter_1000_side_by_side_for_sale.pdfIn PDF document text
    • http://jalasofumikom.rf.gd/netgear_n600_no_internet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72e9a7ef-6fa4-49e2-9481-dc1e3754520c/toxukamulamalulifijusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb7cc14e-13d8-45cd-93f0-80287c7f6ae5/pride_and_prejudice_movie_short_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/618400f0-c531-4d3d-a3ff-c50f0674af53/86802188356.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_off0000f69d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69D 5676 bytes
SHA-256: 7fd2a1ce33bb89075efb7e1deb211565b16c636a82c71a5be9334ed79a0826f3
font_01_sfnt_off000109f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109F5 10972 bytes
SHA-256: 5375dc3bf2478c2b48415c1bf0f3d0c9f3bcc6fba889cc09d865dcc03f7ac2d4

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