Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b7adf348750fa91…

MALICIOUS

PDF

70.7 KB Created: 2021-01-27 16:31:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8474f5cab070257a4a1d5667af39dca2 SHA-1: 771d0eb4af92e637ee6b1ae5e5382259869e54a9 SHA-256: 1b7adf348750fa91659fdbf1d630699e030d3e248faca144e98e92ce3e514934
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/aws?utm_term=chitralahari+audio+songs PDF link annotation
    • https://cdn.sqhk.co/xiroxozalal/goHLJjb/arrowood_golf_course_homes_for_sale.pdfIn PDF document text
    • https://zeposonuvijuz.weebly.com/uploads/1/3/4/7/134702940/c6edd1.pdfIn PDF document text
    • https://vofitikasu.weebly.com/uploads/1/3/1/8/131871658/tojumu-magoxusuzofuba-gofuvagisusa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450624/normal_5fe527ec41fa0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416149/normal_5fcdad6edf612.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482617/normal_5ffefb8b45980.pdfIn PDF document text
    • http://vas-rem.ru/getasilor0yaj.pdfIn PDF document text
    • https://zunotexiru.weebly.com/uploads/1/3/4/8/134890048/2403800.pdfIn PDF document text
    • https://cdn.sqhk.co/vonofuguniti/jevigia/whatsapp_messenger_apk_2019_uptodown.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459636/normal_5fde6eef78430.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/xijjfic/vosawikumoduz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464869/normal_5fd33bf61fb99.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/hh0XYvd/flexeril_half_life.pdfIn PDF document text
    • https://jedidaril.weebly.com/uploads/1/3/4/6/134687024/zimeriloxazofowa.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/tapelu/kijor.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_off0000d849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD849 4992 bytes
SHA-256: 81e54f9b8666b22ba470cf402efb246d717a43705c8c5842d237f745c55e12dd
font_01_sfnt_off0000e930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE930 10940 bytes
SHA-256: 1b33f028a30dfa77fc14d96484dcd32bc01295ec60427d1552e46c56fc53340d