Malicious PDF — malware analysis report

Static analysis result for SHA-256 a58f5034f50a9655…

MALICIOUS

PDF

64.7 KB Created: 2021-02-24 22:13:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0b0fb0baca22cf3b910116d46b611a9c SHA-1: b90a134e3e7639ef3f2dddc71d9b2f1ae000398e SHA-256: a58f5034f50a9655065871d40ef7afd19b2887bb22469936ff3290a4c0bad8fb
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://jacksth.ru/award?keyword=sony+ps-lx300usb+belt PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369930/normal_5ffd6085c00bf.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/the_trials_of_apollo_1_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kagixepo/gOhaPHd/rarity_synonym_antonym.pdfIn PDF document text
    • https://puluzoxaxidu.weebly.com/uploads/1/3/2/6/132683087/tejasami_satupis_rajemulirur_jajosafawej.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428043/normal_5ff3a75528129.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/gadotobatupilupux.pdfIn PDF document text
    • http://bridgecommerce.com/98296345818dlw1o.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/30693797165u5y4j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368978/normal_60079c24ea9d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425726/normal_60229905bd081.pdfIn PDF document text
    • https://cdn.sqhk.co/dagosasojo/bAgcijH/80540513345.pdfIn PDF document text
    • https://cdn.sqhk.co/zapakolozu/Khd5he4/12706519073.pdfIn PDF document text
    • http://xedeporib.medianewsonline.com/how_to_say_thank_you_for_comments_on_facebook.pdfIn PDF document text
    • https://ximazaka.weebly.com/uploads/1/3/2/7/132712593/9410630.pdfIn PDF document text
    • https://jonurimexiv.weebly.com/uploads/1/3/4/3/134321783/guwebagoromuju-murevasovukumo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bifovigavij.myartsonline.com/vawawikiso.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_off0000c124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC124 5256 bytes
SHA-256: a0199db02a7d7400e9f64e39710f3a2fa1c28772ae228fb4d7e8046c03f76ad4
font_01_sfnt_off0000d332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD332 10268 bytes
SHA-256: 3252ed5f4fdbd3dbfcb7d292879a754e0239fb03ebd793377cd7e73bf38cf21c