Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d90628bba53793…

MALICIOUS

PDF

90.4 KB Created: 2021-03-05 21:08:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 813ddfc6112b17402b0b11dd86779559 SHA-1: b79d8812ad8c03af7a6a8c5ee41c2efe14d89820 SHA-256: 82d90628bba537936d0412227bbafa3228d8fd3284f2eccbc221e89d8b0d2e08
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://fokemale.ru/wix?keyword=p+ata+drivers%252Fata%252Fpata+pcmcia.c PDF link annotation
    • http://tapagigozi.medianewsonline.com/21906798593.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490936/normal_602df085b169b.pdfIn PDF document text
    • https://lapifebe.weebly.com/uploads/1/3/2/6/132695874/fivale.pdfIn PDF document text
    • https://cdn.sqhk.co/kasavakujosi/jblmgcA/wordscapes_level_8591.pdfIn PDF document text
    • https://demujerifusa.weebly.com/uploads/1/3/1/4/131437649/4743422.pdfIn PDF document text
    • https://cdn.sqhk.co/gawukale/tjdUDjd/geometry_wars_playstation_4.pdfIn PDF document text
    • http://xipevufizokev.iblogger.org/81243547462.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450250/normal_6023cfa588a2b.pdfIn PDF document text
    • http://wugilunage.iblogger.org/how_to_read_books_for_toddlers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459624/normal_6032aedb144bb.pdfIn PDF document text
    • http://kozizukexepuf.22web.org/bancarizacion_informe_sunat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buzanuziti.myartsonline.com/wezokowak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac75e774-5962-483b-842f-72658dae2a82/temovuradazorulos.pdfIn PDF document text
    • http://jivobolalozula.rf.gd/aaradhike_song_lyrics_malayalam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e4003a-2ba2-478d-95be-adcdb1e19172/bosch_laser_measure_glm_40_user_manual.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_off000125e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125E9 5316 bytes
SHA-256: ef400026c991b657f4d971465d0261468862a5928775933556e95c529f220533
font_01_sfnt_off000137fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137FC 10796 bytes
SHA-256: 509d313d171d7ba87e2d90822f6f2f6da6b65a1a40fd012c102c35e1dd20fe7d