Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d681390714b6f24…

MALICIOUS

PDF

74.9 KB Created: 2021-03-05 13:50:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 726f786b6f7f65bf45f2ca32b0732c7d SHA-1: e3db5a440f9f5e3d1eaa26b6ba6252a6f1a13e2b SHA-256: 1d681390714b6f246481d4cf6e478abff31a1170660ada3ac4e7fbd1ce38be9d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/award?keyword=how+to+pray+for+someone+with+mental+illness PDF link annotation
    • http://ihsteam.ru/646229393461kvzc.pdfIn PDF document text
    • https://norabemomo.weebly.com/uploads/1/3/0/9/130969424/1191685.pdfIn PDF document text
    • http://lg-supportteam.com/alcatel_7210_configuration_guide4nt4y.pdfIn PDF document text
    • https://xujuladobagaju.weebly.com/uploads/1/3/1/4/131437733/babidofide.pdfIn PDF document text
    • https://vinosubolab.weebly.com/uploads/1/3/5/3/135316207/9a7dc905f4e2661.pdfIn PDF document text
    • https://tarosukawumoteb.weebly.com/uploads/1/3/4/6/134691059/82e59bbb4e6c41b.pdfIn PDF document text
    • http://bisipatelaloguj.66ghz.com/new_dimension_in_hindu_astrology.pdfIn PDF document text
    • https://dawifibikinofi.weebly.com/uploads/1/3/4/6/134682228/9698250.pdfIn PDF document text
    • https://kodabovoxalomas.weebly.com/uploads/1/3/5/3/135340354/594755.pdfIn PDF document text
    • http://zipufofofize.22web.org/30542366125.pdfIn PDF document text
    • https://votarozoxanobo.weebly.com/uploads/1/3/4/3/134315144/befupawomozepunuto.pdfIn PDF document text
    • http://lovefoxesi.iblogger.org/hypertension_icd_10_guidelines_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lugukejuraxa.rf.gd/kakapojetuxipugaja.pdfIn PDF document text
    • http://josuguremim.epizy.com/35908638553.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/natojutanepetarefa.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/what_does_upward_feedback_mean.pdfIn PDF document text
    • http://fenolelogokaxip.rf.gd/beach_buggy_racing_2_apk_hack.pdfIn PDF document text
    • http://bumupumelagel.epizy.com/lexmark_e352_photoconductor_reset.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_off0000e8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CD 5296 bytes
SHA-256: a1200059e7c75c1702018a8afb8bcdcbc48cfb91255ef9573120752a98a2ad6b
font_01_sfnt_off0000fac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC0 10460 bytes
SHA-256: 62a20e0af548e0139d13a4dfed1b673418e100e226b51b4d9f3fad643c3c59a0