Malicious PDF — malware analysis report

Static analysis result for SHA-256 297030d28191ab4b…

MALICIOUS

PDF

87.0 KB Created: 2021-02-25 02:57:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1cae0faf187723e3ba74ebba9fa61142 SHA-1: 55bdd45694e5fe09835805a7435eeb0c193add6b SHA-256: 297030d28191ab4bdae7b9e1a1684c835cabe00db4447399cd884b25963d0513
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/123?utm_term=fierce+conversations+chapter+1+summary PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372735/normal_60304e7d481a7.pdfIn PDF document text
    • https://tojumofudino.weebly.com/uploads/1/3/2/6/132681199/wewotuxidexalaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392195/normal_5fe934d675132.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449769/normal_5fd3d17d754c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425487/normal_600baa7123168.pdfIn PDF document text
    • http://goodnatural.space/abhiman_movie_songs7i1xw.pdfIn PDF document text
    • http://sunny-web.ru/can_hormones_affect_thyroid_function6v3f2.pdfIn PDF document text
    • http://hackins.site/223951493456n95s.pdfIn PDF document text
    • http://goldenframecollision.com/vevoxivetuwobafugekumarialkj3.pdfIn PDF document text
    • https://vigoxanumevu.weebly.com/uploads/1/3/4/4/134466257/1548846.pdfIn PDF document text
    • http://copyright-services-us.com/599337643w1rfd.pdfIn PDF document text
    • http://ca-management.website/brother_hl-l2370dw_turn_off_wirelessye46e.pdfIn PDF document text
    • https://lefewaxenu.weebly.com/uploads/1/3/4/0/134012542/lepubevate.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xaduneraxoden.rf.gd/wofilejakogidozele.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/xexawidogetakekiwajomapa.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_off000117a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117A3 5312 bytes
SHA-256: eb0e822617ced9a64acf5d691d98b570a68018ee176f5f53521974ca7c7edcf5
font_01_sfnt_off0001299f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1299F 11204 bytes
SHA-256: d63198c0f3e4bfe30f78b578172fb4338a8c68acae7bf39a9a300b30b5ba1f7c