Malicious PDF — malware analysis report

Static analysis result for SHA-256 c971a83480899100…

MALICIOUS

PDF

71.2 KB Created: 2021-02-14 17:48:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2207ee77c128c4bdc19eabf131b3cd60 SHA-1: b0c9e4ca593630cfd3e27b35be1654ebcfe8b66f SHA-256: c971a8348089910030c620e320011db8d4b59d60832b94d4d94807e8cfae5bb1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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/wb?keyword=beautiful%20cute%20babies%20image PDF link annotation
    • http://prognoz-football.club/2668909174wzy37.pdfIn PDF document text
    • http://shmelev.pro/88345129742nwt3o.pdfIn PDF document text
    • http://bobr.space/local_tour_guide_in_phuket24elb.pdfIn PDF document text
    • https://tulovituvo.weebly.com/uploads/1/3/4/2/134234708/5062240.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/f879a06.pdfIn PDF document text
    • https://vuwapelenepaje.weebly.com/uploads/1/3/4/7/134705438/8127992.pdfIn PDF document text
    • https://cdn.sqhk.co/sutadejuna/gjgeYic/78788438426.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491969/normal_60206fd9a92f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471109/normal_601a411a02315.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/wazorixekunafob/82929106037.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/food_stamps_nyc_income_guidelines_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/yowhatsapp2_v7._90.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/98679725129.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/bekhayali_song_free_djpunjab.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/dovukitabete.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_off0000da03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA03 5296 bytes
SHA-256: 9413b9e165a1cd17e74c1d0d7321083330280b1c6122b338ca8350b5cd0a9d45
font_01_sfnt_off0000ebff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFF 10652 bytes
SHA-256: 2f8c05aa327831f6f21e66480608560c774798a9d3a4257bc89ddb6bf3405b41