Malicious PDF — malware analysis report

Static analysis result for SHA-256 19d6be4b0aa9fb97…

MALICIOUS

PDF

70.1 KB Created: 2021-02-19 07:51:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4396e0901b456e1e5dca75d29db97ffe SHA-1: f64f7012f3891b6b80d7f8d296bb5787c67db9ca SHA-256: 19d6be4b0aa9fb97ba07998d5c3e1030ea142fc0c089e8f08b6eae248bd95546
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://baarspo.ru/wix?keyword=csi+boston+massacre+answers PDF link annotation
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/gufonopeve_pelefok_leligabozib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372074/normal_6002ba74c3ea2.pdfIn PDF document text
    • https://poximixej.weebly.com/uploads/1/3/0/7/130776069/vufunakimigu-vumirifelipemi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386622/normal_5fce08b0c2aac.pdfIn PDF document text
    • https://damajarulapo.weebly.com/uploads/1/3/0/7/130738748/sokegamamow_doremuwuzi_pifejabozud.pdfIn PDF document text
    • https://tunuwadubozowe.weebly.com/uploads/1/3/4/3/134363043/8522682.pdfIn PDF document text
    • https://raduwefun.weebly.com/uploads/1/3/1/1/131164260/vazex.pdfIn PDF document text
    • https://sorudexene.weebly.com/uploads/1/3/1/3/131384015/6519946.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_602967767a7ac.pdfIn PDF document text
    • https://lufegema.weebly.com/uploads/1/3/4/1/134132410/subifopanesara.pdfIn PDF document text
    • https://kusafowagu.weebly.com/uploads/1/3/1/8/131871480/9831547.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485926/normal_6015b7de8db5d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421767/normal_5fc67d95a1595.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kebanibaru.epizy.com/cytology_histology_reports.pdfIn PDF document text
    • http://berojopuzenon.rf.gd/irregular_future_tense_spanish_worksheet.pdfIn PDF document text
    • http://jegapedobip.epizy.com/consider_yourself_piano_sheet_music_free.pdfIn PDF document text
    • http://gitipezusev.rf.gd/92432085357.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA45 4956 bytes
SHA-256: eb0144787176315c30cf99af2422d02751227893bec5f97f01caa62e1a27df63
font_01_sfnt_off0000db03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB03 10084 bytes
SHA-256: 2a5bc78f4770badc528be45dc4f9fc2c1cb212c5e5b62b65c80b89f3b14ce34b
font_02_sfnt_off0000fd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD62 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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