Malicious PDF — malware analysis report

Static analysis result for SHA-256 a494539a0df80fa2…

MALICIOUS

PDF

75.7 KB Created: 2021-01-20 06:31:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 768a7326d8d6d66495ab70692992ce44 SHA-1: 832213b529f5c19a58fdd6d332d8f960fdcc49dc SHA-256: a494539a0df80fa2e9e5d41212d34a0c4fdff7b7edaa08d284d2a24431287a1c
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://druttle.ru/123?utm_term=photo+studio+pro+apk+app+download PDF link annotation
    • https://rukuzidin.weebly.com/uploads/1/3/4/5/134517246/gadozijajiwalab.pdfIn PDF document text
    • https://kifesajisibak.weebly.com/uploads/1/3/4/8/134884742/ce9a2e061ca1e83.pdfIn PDF document text
    • https://vokinojen.weebly.com/uploads/1/3/4/8/134851280/4688106.pdfIn PDF document text
    • https://site-1172255.mozfiles.com/files/1172255/31430196889.pdfIn PDF document text
    • https://paxobafu.weebly.com/uploads/1/3/4/6/134697986/goxofunujevenibew.pdfIn PDF document text
    • https://site-1248608.mozfiles.com/files/1248608/slader_algebra_1_workbook_answers.pdfIn PDF document text
    • https://lebivituwaw.weebly.com/uploads/1/3/1/8/131856954/1200602.pdfIn PDF document text
    • https://site-1167955.mozfiles.com/files/1167955/zuxejapim.pdfIn PDF document text
    • https://sufudavinor.weebly.com/uploads/1/3/1/3/131381021/871732.pdfIn PDF document text
    • http://vixerixobo.22web.org/96088933988.pdfIn PDF document text
    • https://site-1178504.mozfiles.com/files/1178504/furizanisonufovotojat.pdfIn PDF document text
    • https://site-1171554.mozfiles.com/files/1171554/737366492.pdfIn PDF document text
    • http://xitaboketeloba.iblogger.org/b._el._ed_syllabus_mjpru.pdfIn PDF document text
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/lutipokazonozi.pdfIn PDF document text
    • https://liwavijej.weebly.com/uploads/1/3/4/3/134379327/005d8d.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/tetuv_geterijavexotog_kexanolupag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gewofudi.rf.gd/69779366554.pdfIn PDF document text
    • http://jokiperone.epizy.com/common_app_essay_prompts_2019.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_off0000eceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEB 5204 bytes
SHA-256: 9cb84997bb86b129a7bf42f53f03f8073ba9cb576098c0670dc55cecc4bb77f6
font_01_sfnt_off0000fea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA5 10240 bytes
SHA-256: c317b3d9ac08c77d51cd375950ead7f8ee36c62202aadb5b1d5778335d4aebcf