Malicious PDF — malware analysis report

Static analysis result for SHA-256 b756e71dbdef8acc…

MALICIOUS

PDF

70.0 KB Created: 2021-03-04 03:02:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: abbab6dbb203b1bd5dd4587a17a30649 SHA-1: c837b82251fe888b41cd4d24cd492d7fb210ac52 SHA-256: b756e71dbdef8accc6e1ad68aad81a747debc9fa0bb69a4dde959a4ce0b72ed1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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=pet+guide+ragnarok+mobile+episode+5 PDF link annotation
    • https://wobomiti.weebly.com/uploads/1/3/4/5/134501920/wuvapakoraximaxazu.pdfIn PDF document text
    • http://good-production20.site/simplehuman_touch_free_rechargeable_sensor_soap_dispenser_whitee6s49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448744/normal_5ff98ee3746cd.pdfIn PDF document text
    • https://cdn.sqhk.co/jumupebuvi/aiIxhgo/keridofenezidejosowulitaz.pdfIn PDF document text
    • http://meetsoda.club/29596424461n3qlc.pdfIn PDF document text
    • https://cdn.sqhk.co/lopovekis/igj2wgj/36367897212.pdfIn PDF document text
    • https://cdn.sqhk.co/juvexafi/fjf2gj9/evolution_psychology_quizlet.pdfIn PDF document text
    • http://furniture21.online/favirubezetufopzw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418762/normal_6003669739211.pdfIn PDF document text
    • http://rte-ita.fun/90575550180ki6rz.pdfIn PDF document text
    • https://jofomozali.weebly.com/uploads/1/3/5/3/135387403/810433.pdfIn PDF document text
    • https://cdn.sqhk.co/rufomezin/ibKaZgd/guilty_crown_female_characters.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/lazesej/nubokuvivesisoz.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/21008439929.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/51782525350.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_off0000d246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD246 5608 bytes
SHA-256: c37ef16e1a2c41f7d11c7653200d7f46dfd4006b83494e030a7d9ce685853b97
font_01_sfnt_off0000e540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE540 10656 bytes
SHA-256: 1659c9b794c02b853feacb530a77631bbc35c0b41206282214b4605174224a8a