Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f15653bef105af5…

MALICIOUS

PDF

69.6 KB Created: 2021-02-14 15:46:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ce271e45bbb0c6acf44a90a61f6c8a6a SHA-1: cbb2b4b70fe871f12d8032aa86c925f7b3aaa144 SHA-256: 9f15653bef105af567492d48e12763cdbd4fcc8d1d10d6b97e7bc8cecd58a284
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://leonvi.ru/wix?keyword=8+ball+pool+unblocked+at+school PDF link annotation
    • https://tojewenegekov.weebly.com/uploads/1/3/4/5/134502344/vemasimima.pdfIn PDF document text
    • https://rilinozeni.weebly.com/uploads/1/3/1/0/131070652/taxetilagonunova.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450424/normal_5ff2873ead243.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476577/normal_5ff3cca9c9f5c.pdfIn PDF document text
    • https://marejipafikelor.weebly.com/uploads/1/3/1/4/131437604/mivizoki_vikariwar_zapitezorowa.pdfIn PDF document text
    • https://dapalirodo.weebly.com/uploads/1/3/1/4/131483520/751468ef2.pdfIn PDF document text
    • http://tepuragebu.iblogger.org/33843556436.pdfIn PDF document text
    • https://vifazadaza.weebly.com/uploads/1/3/4/8/134883600/1588657.pdfIn PDF document text
    • http://gikisivota.iblogger.org/7813609396.pdfIn PDF document text
    • http://gifozuxozud.22web.org/jodha_akbar_tamil_video_song.pdfIn PDF document text
    • https://komuwewolidixat.weebly.com/uploads/1/3/4/8/134871085/5032355.pdfIn PDF document text
    • https://linepofikoleku.weebly.com/uploads/1/3/4/4/134492010/xepiwadelune.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/tamobalasu/92148988682.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/84807784052.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/xudipewekasanunasef.pdfIn PDF document text
    • http://nilikejavovop.rf.gd/author_worksheets_1st_grade.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_off0000d5a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A7 5368 bytes
SHA-256: 09f1139db46e503b6686488bc75a33ce78d218701d293b7d006498e547c8e06e
font_01_sfnt_off0000e7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DB 9708 bytes
SHA-256: c960c241aa5de88105fd0a9a151410225634cb65a4dd42391c2b76f6ac34eebf