Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a4cc57b668027a…

MALICIOUS

PDF

78.9 KB Created: 2021-02-25 04:57:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 89c812e0321772890aaf70cb7a80e05d SHA-1: ea33e4a8059c685becbec0c9dbe58c98ca91075a SHA-256: d9a4cc57b668027a5e665128869a85d25cd7de2ce3d08ca99066edc9e83924a7
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/strik?utm_term=georgia+limited+driving+permit+rules PDF link annotation
    • https://mavuzoxawajike.weebly.com/uploads/1/3/0/9/130969593/zenozukegoji.pdfIn PDF document text
    • https://bafalado.weebly.com/uploads/1/3/4/8/134865771/5ce79138398.pdfIn PDF document text
    • https://watagejikifawup.weebly.com/uploads/1/3/4/5/134589749/jewoxaxikira.pdfIn PDF document text
    • https://cdn.sqhk.co/felatadag/CTEhcii/kogijujan.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/dZomQEo/best_captions_for_fb_pics.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/55511344586.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/ggrheii/baduwarupefowev.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/what_are_the_rules_for_the_order_of_operations.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/weight_loss_chart_printable.pdfIn PDF document text
    • https://lejonelawubuw.weebly.com/uploads/1/3/1/4/131453657/1392244.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/hfihY74/nizoxonatidulavedodej.pdfIn PDF document text
    • https://xelixaxoso.weebly.com/uploads/1/3/1/4/131407481/limufavinuv-migukeji-lekelisu.pdfIn PDF document text
    • https://fekodajitor.weebly.com/uploads/1/3/0/8/130874258/1225882.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/legal_dictionary_english_to_hindi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443371/normal_5ff90a81c1984.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f6e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E7 5368 bytes
SHA-256: f23fc1e14a402044cf99a7f7395ab01818ac0b7c1e86834422f41605fffb6250
font_01_sfnt_off0001091a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091A 11024 bytes
SHA-256: a9d1913f86e73a4e9a666358c10e59f6a096c8dc3a5342e186ee1e5d64180d3c