Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5260cc9f84af64a…

MALICIOUS

PDF

70.2 KB Created: 2021-02-14 14:10:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4b7bc1f65d5b5e2ad783b740df63294c SHA-1: 6e0a2c087f7424227398062e21ee49f12d0d8bce SHA-256: d5260cc9f84af64a8024b20f906bb7d1e1c9a7ccdaea179aee1eec146a27942b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=my+math+by+mcgraw+hill+printables In PDF document text
    • https://filinisosiwox.weebly.com/uploads/1/3/0/8/130814007/mutas.pdfIn PDF document text
    • https://bonuxomudod.weebly.com/uploads/1/3/2/8/132814593/7080781.pdfIn PDF document text
    • https://daniwevuwawudo.weebly.com/uploads/1/3/4/8/134849628/sikazuvutazoni_xugeriborix_fomevulegarizej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374540/normal_602196d0f20a2.pdfIn PDF document text
    • https://womazineput.weebly.com/uploads/1/3/4/8/134895737/zazeboxafozo-zizovatixegatew-rewelureb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450719/normal_60240b0cc31fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413976/normal_5fd08d2191189.pdfIn PDF document text
    • http://vonezejavej.22web.org/88501024885.pdfIn PDF document text
    • http://xurunoxawes.iblogger.org/82749921546.pdfIn PDF document text
    • http://zozegakipuvi.iblogger.org/ielts_listening_mock_test_with_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kalilom.epizy.com/41649132719.pdfIn PDF document text
    • http://sokiguxesixup.epizy.com/hr_director_resume_template.pdfIn PDF document text
    • http://moraruvotu.epizy.com/ssc_je_admit_card_2019-_20.pdfIn PDF document text
    • http://pifazudiso.rf.gd/eleanor_rigby_orchestra_sheet_music.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_off0000d52b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD52B 5688 bytes
SHA-256: b1de7755493b4552012762ef9ff24ec3576ebb446cf5039229c297baa3342a4d
font_01_sfnt_off0000e87c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87C 10440 bytes
SHA-256: 439844bb1d5a27898a7751f0f7dbcd2b557f4071d5bd711ff41445a2d0d3b482