Malicious PDF — malware analysis report

Static analysis result for SHA-256 31d4bffdbf3d0bc4…

MALICIOUS

PDF

74.0 KB Created: 2021-02-28 18:05:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cc6d67d47c6be920072100ae39f9d644 SHA-1: 2d0f515a534b2416333fe4065243286ad291050f SHA-256: 31d4bffdbf3d0bc45f040b2a9e87206cffd7f900d323220834d3f38e2bea767b
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://gimoguvi.ru/strik?utm_term=what+kind+of+math+is+on+the+ged+test+2020 PDF link annotation
    • http://visatog.22web.org/zebokupipu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373998/normal_5fe3319b748a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377662/normal_602b69380dd24.pdfIn PDF document text
    • https://ruzutemeba.weebly.com/uploads/1/3/2/6/132681300/saxirofoziweki_mokulepuz.pdfIn PDF document text
    • http://galubiwigo.iblogger.org/bomopiwowezuzujubuso.pdfIn PDF document text
    • https://cdn.sqhk.co/makubeku/KUicgj7/79134583306.pdfIn PDF document text
    • https://jukudedavat.weebly.com/uploads/1/3/0/9/130969580/c3fb91d52bd8b.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/ihcFghC/83286534547.pdfIn PDF document text
    • https://dosupara.weebly.com/uploads/1/3/1/3/131380612/fovedukat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472186/normal_602876b849b3d.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/d4C3jhb/87216996446.pdfIn PDF document text
    • https://resezavurafufok.weebly.com/uploads/1/3/1/4/131407395/wemozudogopi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rileponabamel.rf.gd/4_temperamentos_sanguineo_colerico_melancolico_fleumatico.pdfIn PDF document text
    • http://sejokuze.rf.gd/rewuf.pdfIn PDF document text
    • http://melamepapate.rf.gd/81295365408.pdfIn PDF document text
    • http://diturasenupope.epizy.com/dolamigejejinidapolo.pdfIn PDF document text
    • http://dekefolujif.epizy.com/rumanetizedo.pdfIn PDF document text
    • http://bexadujozopu.epizy.com/annie_khalid_mahiya_mp4.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_off0000e0f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F8 5544 bytes
SHA-256: 99b89fca5d67654a80e98b0e0b1e95b83cbb964a3b3790fd6f648ce6065213cf
font_01_sfnt_off0000f3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C4 11000 bytes
SHA-256: fa44994b89668cc3abf221401261bf06a2d7338eed55cbde987c4d5ee491e43d