Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b7b29db6f45ef12…

MALICIOUS

PDF

71.4 KB Created: 2021-02-18 20:55:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: bd57a41f6c872ea649492a44a8dc5ba6 SHA-1: 2755031f5eb81f675da3873ada3cbac48338736e SHA-256: 4b7b29db6f45ef12176f4657ffe82ef502fc165bd64b9e3135550e742ee18462
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/wix?keyword=navegadores+web+ligeros PDF link annotation
    • https://cdn.sqhk.co/xusovatovu/0d3sXQH/vivozumewilewe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447915/normal_601baaa7cc98b.pdfIn PDF document text
    • http://hangookoil.ru/337605073988oe46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450034/normal_5fcf202e235e0.pdfIn PDF document text
    • http://rameautbxy.space/converting_binary_numbers_worksheet9s9vy.pdfIn PDF document text
    • https://cdn.sqhk.co/labojime/aheZhd2/21093937280.pdfIn PDF document text
    • https://cdn.sqhk.co/xidupesijij/i47jaGE/kiduvevutifimebofed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382209/normal_600f9cfa69108.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388617/normal_602c04feb68a2.pdfIn PDF document text
    • http://tebefomi.22web.org/sowodamofezujevinumo.pdfIn PDF document text
    • https://cdn.sqhk.co/mitebosareki/13iixg1/cyber_hunter_steamdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462038/normal_5fea3f66ced96.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477873/normal_600985e754979.pdfIn PDF document text
    • http://nutisoda.22web.org/13696575588.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489732/normal_5fedcdfb8de70.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://petizitopebil.epizy.com/magiwiwuzamerolusebir.pdfIn PDF document text
    • http://tojikesopi.rf.gd/97099482000.pdfIn PDF document text
    • http://gotenekopibijo.epizy.com/grapher_2._0_free.pdfIn PDF document text
    • http://bibirosomuxir.epizy.com/vetopokaxaro.pdfIn PDF document text
    • http://disefubukub.rf.gd/piwemido.pdfIn PDF document text
    • http://divogidiguxofib.epizy.com/wagimer.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_off0000d23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23B 5252 bytes
SHA-256: 1b9ca746f17b1eb259ec099a31180a7b30e73ac81d3d3a5c819d4a9610a27dc8
font_01_sfnt_off0000e43a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43A 1864 bytes
SHA-256: 614ed29908490b2cf6eaaca9d0091e1e84029f876ebc83a1b5e4ffadee7cd41d
font_02_sfnt_off0000ed48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED48 10140 bytes
SHA-256: 6f036c7bae81f1c180320aa21e92f606459c4b88ff854c15834c262535b0ceb9