Malicious PDF — malware analysis report

Static analysis result for SHA-256 515c7054e3192838…

MALICIOUS

PDF

70.7 KB Created: 2021-01-30 16:07:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 91e005262b48ee4ce872e4101c3b0f97 SHA-1: c967cb145c68c2ae4c2c1338a5854c73f57ed8fe SHA-256: 515c7054e3192838e6992cda2b706353241057877beb8b5abde80a25b8baaf6c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=management%20consulting%20services%20sic%20code PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365542/normal_5fee5140192ab.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/ThdhbBM/wozogumuvisud.pdfIn PDF document text
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/pajuvowovitoputij.pdfIn PDF document text
    • https://ruwatija.weebly.com/uploads/1/3/4/8/134846771/239676.pdfIn PDF document text
    • https://damowovevibip.weebly.com/uploads/1/3/0/9/130969764/gakusezasuz-zizezex-savamuwuvubasu.pdfIn PDF document text
    • https://nifiguxo.weebly.com/uploads/1/3/1/3/131398563/4016279.pdfIn PDF document text
    • https://cdn.sqhk.co/dilizilozok/j1hiTpj/chicken_manure_vs_cow_manure.pdfIn PDF document text
    • https://zevuvizaxetu.weebly.com/uploads/1/3/4/8/134887967/kirubukidi.pdfIn PDF document text
    • https://cdn.sqhk.co/tubadaluzafu/CiigdUk/neo._emu_apk_mod.pdfIn PDF document text
    • https://gefizubumob.weebly.com/uploads/1/3/4/4/134473977/d273538199d9384.pdfIn PDF document text
    • https://cdn.sqhk.co/jadosoxiko/eahcVhb/68516435502.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370072/normal_5fed3f791ad09.pdfIn PDF document text
    • http://waliwosodumobu.iblogger.org/printable_ketogenic_diet_food_list.pdfIn PDF document text
    • https://ranetaxute.weebly.com/uploads/1/3/4/8/134886021/88c62af8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://banitazivi.epizy.com/recover_deleted_text_messages_android_without_root.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_off0000d946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD946 5324 bytes
SHA-256: f5b1a4db5edf6f8699f524e0addbbd938235a1c7f4c70fe70d8c8cba44ead182
font_01_sfnt_off0000eb61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB61 10200 bytes
SHA-256: e3af4bd81f5810ee88717ff6fdf0a3f90982bbdb6c11eb268d9bd5a4664b59fa