Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d58f421d3bc4a5c…

MALICIOUS

PDF

71.3 KB Created: 2021-02-18 02:13:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3ff6b9eb9c4a2601ce9e2cb493a68f33 SHA-1: b6c4e31ba215568fb492c26280f701ec059530e7 SHA-256: 5d58f421d3bc4a5cebee03de6be0bac76372791bffbadae0a592f763b1c18e63
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jottigo.ru/wix?keyword=endless+praise+lyrics+by+dare+justified PDF link annotation
    • https://cdn.sqhk.co/guxudakakali/biygfig/piano_tiles_rock_legend_songs.pdfIn PDF document text
    • https://rapovadok.weebly.com/uploads/1/3/4/7/134705404/44a8a778e841dd6.pdfIn PDF document text
    • https://viwutexotopuj.weebly.com/uploads/1/3/4/5/134522905/vupupezumupiru.pdfIn PDF document text
    • https://tiwilofudux.weebly.com/uploads/1/3/1/6/131606348/nimuberemex.pdfIn PDF document text
    • https://vupolape.weebly.com/uploads/1/3/4/7/134749420/543174.pdfIn PDF document text
    • https://bulabameworiw.weebly.com/uploads/1/3/4/0/134096114/7982019.pdfIn PDF document text
    • https://riwobasafogad.weebly.com/uploads/1/3/3/9/133999818/lotodo.pdfIn PDF document text
    • https://fusajebotiv.weebly.com/uploads/1/3/4/3/134320253/dc57d7c8.pdfIn PDF document text
    • https://menafove.weebly.com/uploads/1/3/1/4/131438456/julebe.pdfIn PDF document text
    • https://vuwezamubom.weebly.com/uploads/1/3/0/8/130814902/gazoxef.pdfIn PDF document text
    • https://gotagifegu.weebly.com/uploads/1/3/1/6/131607164/498051b32.pdfIn PDF document text
    • https://libexezelidod.weebly.com/uploads/1/3/1/4/131454359/zaxelu.pdfIn PDF document text
    • http://pavedewono.iblogger.org/captain_sim_757_ace.pdfIn PDF document text
    • https://xojajadajopun.weebly.com/uploads/1/3/4/6/134646320/589073.pdfIn PDF document text
    • https://debozapo.weebly.com/uploads/1/3/1/1/131164198/fabotogovetasat-netuxumo-vozivanovusu.pdfIn PDF document text
    • https://lelodudovoveju.weebly.com/uploads/1/3/1/6/131607117/a1414f6f9257.pdfIn PDF document text
    • https://dijajogid.weebly.com/uploads/1/3/0/8/130874349/valofore.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sawozepanoludib.rf.gd/37300994521.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_off0000db55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB55 5424 bytes
SHA-256: 327a217dcc42972b36152c363d69e7391aab93b60eac581f085543eca38855fb
font_01_sfnt_off0000ede0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE0 10036 bytes
SHA-256: c2a2b0db1e8e6efc1aec80562291aad2702d706b139adf5abb9b5131c7a56d72

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