Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0e3ca36cd53f2d6…

MALICIOUS

PDF

72.9 KB Created: 2021-02-21 12:41:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d3be2477e5b27e660ec9967ce3ee15fb SHA-1: 9bbcdac8998b54777dea984b2b4fb5b34d46db23 SHA-256: b0e3ca36cd53f2d6812e4eadef8d5e1159554027c06bc53663d58d6ff3fb2d6a
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://baarspo.ru/wix?keyword=frp+bypass+tool+apk+2020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366969/normal_6002b0234afc8.pdfIn PDF document text
    • https://tejenopaje.weebly.com/uploads/1/3/1/1/131164027/nawog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455639/normal_6004af8eb2a87.pdfIn PDF document text
    • https://zetozegazironik.weebly.com/uploads/1/3/2/6/132696155/fibipikutaleve.pdfIn PDF document text
    • https://vesanawe.weebly.com/uploads/1/3/4/6/134602832/fogirivebox_zagamitufoko_paweduxaz.pdfIn PDF document text
    • https://luzibajaxu.weebly.com/uploads/1/3/2/6/132695572/dibel-govofobamotuwo-lapebapaneno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413347/normal_601bd2ffc1471.pdfIn PDF document text
    • https://kenofina.weebly.com/uploads/1/3/5/2/135295682/252678.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413848/normal_5fe445a3b5a5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407788/normal_5fdaf3c69dcfd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nutujetis.rf.gd/jegujetasuvixudimipak.pdfIn PDF document text
    • http://fezekugagow.rf.gd/pakupivuxifomivid.pdfIn PDF document text
    • http://jutizukijimeno.epizy.com/10568901646.pdfIn PDF document text
    • http://terefikug.epizy.com/31632593791.pdfIn PDF document text
    • http://nuwumexuxesi.epizy.com/josozenugemug.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_off0000e0cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CC 5348 bytes
SHA-256: 534015ee336813c1b2e42dfcdce144039b2d1e65a1f365640e41f92535b2fbc8
font_01_sfnt_off0000f30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30E 10472 bytes
SHA-256: 3538e44531deeb1e6db73aac6d88023fed4bc74b22b8d5fba192913406652a50