Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b47327fdab77ae…

MALICIOUS

PDF

80.9 KB Created: 2021-01-29 12:34:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 874d40bb3d439e15c6041af1b957f635 SHA-1: 857cb075073d4273fd9dd186633717fdd9a980f2 SHA-256: 88b47327fdab77ae5afd46a0b555526a85b244c5a1d69fc83326d139c1159957
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://leonvi.ru/123?utm_term=the+bane+chronicles+read+online PDF link annotation
    • https://refugisedenofa.weebly.com/uploads/1/3/1/3/131380322/1e2f28f4f0.pdfIn PDF document text
    • https://guxozagubixox.weebly.com/uploads/1/3/1/4/131437827/lemedekekifatanow.pdfIn PDF document text
    • http://blu-ital.space/combien_dieu_est_grand_shirvz04z.pdfIn PDF document text
    • http://babixuxuw.22web.org/42913448671.pdfIn PDF document text
    • https://koponabunabo.weebly.com/uploads/1/3/4/5/134520941/xoduziti.pdfIn PDF document text
    • https://xetakafiso.weebly.com/uploads/1/3/1/8/131856826/d47f8f1cb.pdfIn PDF document text
    • http://najapizarut.22web.org/sewovufilinip.pdfIn PDF document text
    • https://ramimuluvisefo.weebly.com/uploads/1/3/0/7/130775145/berodi.pdfIn PDF document text
    • https://vanixegufewip.weebly.com/uploads/1/3/4/5/134511125/a8d297fc9e10e9.pdfIn PDF document text
    • http://frut-tree.site/35056231849l1cm6.pdfIn PDF document text
    • https://nujodobenume.weebly.com/uploads/1/3/4/4/134441993/75fcdff3c70ae0.pdfIn PDF document text
    • http://sberbank.services/agriculture_notes_free_downloadnuzdb.pdfIn PDF document text
    • http://sell-toclick.online/71579119723h9uqm.pdfIn PDF document text
    • http://zevixoleg.iblogger.org/fexaveginevugibeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nedajazamofo.epizy.com/getesojo.pdfIn PDF document text
    • http://xinasewaja.epizy.com/wevomenol.pdfIn PDF document text
    • http://gerireg.epizy.com/audacity_effects_tutorial.pdfIn PDF document text
    • http://xovijoj.epizy.com/37428209321.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_off0001003e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1003E 5116 bytes
SHA-256: 854c10d2e91d83957f6f96365b1ee6e66acd2c6b40c1d4d261584bf920e4c177
font_01_sfnt_off00011190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11190 10872 bytes
SHA-256: b6092ad98da400e6a7c36e898b5150cae25650e228fc12a0c8ac72d6fc75abc7