Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e6c23611feb7a1…

MALICIOUS

PDF

72.9 KB Created: 2021-02-14 11:42:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5ed266ff98a208518571f7842a92fca4 SHA-1: 9a10a9f21d57a5de30a54f3ce5900ce5640c8a40 SHA-256: b9e6c23611feb7a1a86fed16793e3aafd9b04c57482be2c8771f7616cf572a6a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://bologen.ru/wix?keyword=carrier+air+conditioning+control+panel+manual PDF link annotation
    • https://xabisipejerifo.weebly.com/uploads/1/3/4/6/134634854/0b8043c117c.pdfIn PDF document text
    • https://faluwesidiji.weebly.com/uploads/1/3/0/7/130738597/tefetasuboz.pdfIn PDF document text
    • https://zilexewutefak.weebly.com/uploads/1/3/4/6/134608169/3ccc22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443812/normal_5fe700a8bc586.pdfIn PDF document text
    • https://lowarimubabop.weebly.com/uploads/1/3/4/7/134712264/tigipobomo_jujugu.pdfIn PDF document text
    • https://jobuvofuwado.weebly.com/uploads/1/3/1/4/131483112/vurisikuzudim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368996/normal_6007ebaa9f730.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450734/normal_60161d0cee896.pdfIn PDF document text
    • https://kiwazavu.weebly.com/uploads/1/3/0/7/130776346/luzarebu.pdfIn PDF document text
    • https://molesomux.weebly.com/uploads/1/3/2/6/132681378/e3501.pdfIn PDF document text
    • http://voxamuzovo.22web.org/98897164470.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383308/normal_601a3b4847c68.pdfIn PDF document text
    • https://betetudiju.weebly.com/uploads/1/3/5/3/135348010/resox_xazusetazuf.pdfIn PDF document text
    • https://turarizamagux.weebly.com/uploads/1/3/1/4/131453837/rajagogow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477651/normal_6028065bd0c04.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tilanetojik.rf.gd/bakrid_video_song_free.pdfIn PDF document text
    • http://gozivedelefagi.rf.gd/bridges_math_home_connections_grade_5_answers.pdfIn PDF document text
    • http://konewumabujak.rf.gd/wolivogutujorefewuvozima.pdfIn PDF document text
    • http://xijodakofifo.epizy.com/ergonomic_assessment_report_sample.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_off0000e13e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13E 5120 bytes
SHA-256: b249f054d654ffdabc756f894976b7b9e48aa392fa84ff9199410815e0f38587
font_01_sfnt_off0000f292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF292 10308 bytes
SHA-256: 3f9524943599e4e3743ca1fa49cbbe3127cc9448e444e18755c7d0657a8ceece

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