Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebb026c5964b0d0…

MALICIOUS

PDF

70.8 KB Created: 2021-03-04 10:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 542f15a5fe218f022be1209af49a809f SHA-1: 5ccc84589187a67aa8cacebf0a5d077fc674aed1 SHA-256: cebb026c5964b0d0d8012e543d107993e9eb411f02c5158093467dd0cfdf3f4a
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://pelibifir.ru/award?keyword=how+to+know+when+your+sump+pump+is+not+working PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413458/normal_6034d57b7f22a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472481/normal_603fa60d3f7a4.pdfIn PDF document text
    • http://tufofol.medianewsonline.com/medical_anatomy_and_physiology_book.pdfIn PDF document text
    • https://mabunamu.weebly.com/uploads/1/3/4/9/134902385/kabodepaxewul_vipudesexedu.pdfIn PDF document text
    • https://zokelafeg.weebly.com/uploads/1/3/4/8/134889419/9890720.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452618/normal_6014ba320f6a2.pdfIn PDF document text
    • https://cdn.sqhk.co/kolokejo/jbAgdzL/jufavimivoxeriguzaveworif.pdfIn PDF document text
    • https://jegobagugixados.weebly.com/uploads/1/3/4/8/134858953/fabir_buseb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415292/normal_5fca2ce22b2ad.pdfIn PDF document text
    • https://nirefuriwubava.weebly.com/uploads/1/3/1/6/131637308/borezo.pdfIn PDF document text
    • http://metoxegid.mygamesonline.org/rikoko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460725/normal_602995f2cb676.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/zubuwujoxom/avatharam_thendral_vanthu_female_song.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/introductory_econometrics_a_modern_approach_solutions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/gw2_legendary_weapons_crafting_guide.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_off0000d7ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CE 5208 bytes
SHA-256: 3366e14cfcecd3aacd88febe37a58609c26aaf07a1cd03c0130165965a6349f9
font_01_sfnt_off0000e978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE978 10612 bytes
SHA-256: 93e45d7ac4c798eaf625aa54f1423281d403625e0e6253de630364787db14e75