Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cfe53ff98c67f06…

MALICIOUS

PDF

73.7 KB Created: 2021-02-13 22:04:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c355ef7c44a584af1ba1c86a2a1ee265 SHA-1: 1743fe54bcb9e6e3f9406fc903ef9160110fb923 SHA-256: 4cfe53ff98c67f069dc9703d4147945f29bc48f588ebdca0e819ca7fb705795c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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 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/aws?utm_term=metric+conversions+worksheet+physics PDF link annotation
    • http://kekebol.iblogger.org/abba_voulez_vous_album.pdfIn PDF document text
    • https://kixixowagixu.weebly.com/uploads/1/3/2/7/132710794/todabeminogin.pdfIn PDF document text
    • https://wegebumerovoni.weebly.com/uploads/1/3/5/3/135387929/0250cb33988c74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370777/normal_602640ae861dd.pdfIn PDF document text
    • http://vakekaninu.iblogger.org/anemia_ferropenica_minsa.pdfIn PDF document text
    • http://fewomazojuxed.iblogger.org/49870734649.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449392/normal_6002bc6c77e78.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/je49ifh/como_descargar_rush_rally_3_para_pc.pdfIn PDF document text
    • https://semuzotefol.weebly.com/uploads/1/3/1/4/131437619/782ab.pdfIn PDF document text
    • https://cdn.sqhk.co/vixuzemabad/cgj0igh/69748382918.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459796/normal_60172c4ce1115.pdfIn PDF document text
    • https://mexejafulid.weebly.com/uploads/1/3/4/8/134880369/9b27ff25.pdfIn PDF document text
    • https://bitokulizawefe.weebly.com/uploads/1/3/4/6/134684274/2697219.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/iigjjj5/83653483685.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/ihd3ggh/don_t_rush_remix_rauw_alejandro_lyrics.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dafawesag.epizy.com/android_app_meaning_in_tamil.pdfIn PDF document text
    • http://gemakeruw.epizy.com/59197787123.pdfIn PDF document text
    • http://savefativiluz.epizy.com/create_org_chart_from_excel_spreadsheet.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_off0000e2cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CD 5100 bytes
SHA-256: 7dbdf2287c1b4fb27a3d400bcceafaf4b354afb37baf9d71b1c65156c62eb31f
font_01_sfnt_off0000f44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44D 10960 bytes
SHA-256: 01eb94c62ca1ea524fa119e868e97d5eef5bc5a178c5eccd0e8d9bf05bd8d790