Malicious PDF — malware analysis report

Static analysis result for SHA-256 d30caec8d37dee9c…

MALICIOUS

PDF

72.0 KB Created: 2021-03-02 23:45:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d555dcc9359f93cd7e6465806de734e6 SHA-1: d6a76de76cf3f917e6fdcb663477292b0642af3e SHA-256: d30caec8d37dee9c62b85a54dcd930be3d35b5e671bb1c60828c7b6488a78880
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dafemum.ru/wix?keyword=boss+me-50+manual In PDF document text
    • http://stixlife.info/bessel_inequalitymrpfi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389599/normal_601359de8ddfe.pdfIn PDF document text
    • http://vas-rem.ru/penibisivopolidusabigujeyxh82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476420/normal_600a547b677e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503617/normal_60216b78196e4.pdfIn PDF document text
    • http://triple-doska4.club/93529503111md1v8.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/5939050.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381551/normal_5fe58b2a56bf0.pdfIn PDF document text
    • http://websporizle3.com/revenumevi8l12b.pdfIn PDF document text
    • http://lnstgramhelpcopyright.com/warframe_optimization_guide5k1kf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481684/normal_602ef71106913.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461766/normal_5fe7ceb2ac7b7.pdfIn PDF document text
    • https://wumaluruporemad.weebly.com/uploads/1/3/0/9/130969386/sufuwebekigirijude.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367278/normal_5fe307353cd11.pdfIn PDF document text
    • https://bateworolod.weebly.com/uploads/1/3/4/3/134315912/dirolibuzel.pdfIn PDF document text
    • https://mizemajawoxulu.weebly.com/uploads/1/3/1/4/131437858/riwabokewomolewaka.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gofosuxubajo.epizy.com/38131478310.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/audi_q7_3._0_tdi_performance_upgrades.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/vozatozutomapepa.pdfIn PDF document text
    • http://texazufuvo.rf.gd/dubojigudojazalesarejov.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/science_laboratory_safety_quiz_answers.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_off0000de33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE33 5080 bytes
SHA-256: dc0886009ad62ca8ab56f864154db302cecd214bbb5459e7997516938a8e14a6
font_01_sfnt_off0000ef71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF71 10368 bytes
SHA-256: 2e44d861df0488bb653e793e52572f83a3aa63fcb73ecb9da7474e0845198406