Malicious PDF — malware analysis report

Static analysis result for SHA-256 87563cc91b5db82b…

MALICIOUS

PDF

69.9 KB Created: 2021-01-30 06:39:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0208553a6946e68a7f086329f5662899 SHA-1: 0425d15bb07663230aeeb9cff74d93db3c16e7bc SHA-256: 87563cc91b5db82b5b5c8ac8dbd4e7e97d1e284eac578930d60dc130f12cfbf7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/aws?utm_term=bearded+collie+information+and+facts PDF link annotation
    • http://exampl1214.com/ontario_building_code_illustrated_guidezu0e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375891/normal_5ffbb734a2607.pdfIn PDF document text
    • http://vknart.xyz/xulovilofuavcga.pdfIn PDF document text
    • https://putofikanavo.weebly.com/uploads/1/3/0/7/130738484/vifejusega.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422631/normal_5fcb21b862e65.pdfIn PDF document text
    • https://navemozozaju.weebly.com/uploads/1/3/1/1/131164567/supufebogas_vubaxofotef_rivifebed_wuxamojuguseki.pdfIn PDF document text
    • http://universe1.space/2894690999ieu83.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447631/normal_5ff65ad9733f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385869/normal_5ff240341d9ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453718/normal_5fddcab6893df.pdfIn PDF document text
    • http://setlyb.online/fender_american_acoustasonic_telecaster_manualjrngv.pdfIn PDF document text
    • http://gsmall.space/vurakesugijofojevsb3q.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/muvojugejoxip/58390140006.pdfIn PDF document text
    • http://rowagaparik.rf.gd/definition_of_stress_in_psychology.pdfIn PDF document text
    • http://litopuputorer.rf.gd/allegiant_2016_dual_audio_full_movie.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_off0000d6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D0 5216 bytes
SHA-256: d2f8f8f3e87f77535103601d25f68f6b182f41db7604b4f595e30548adf66114
font_01_sfnt_off0000e879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE879 10004 bytes
SHA-256: a79ebc77b5d3c500e54776c3b5480c71672d4ec0ac067c2a968ec5f3ed4cd1cb