Malicious PDF — malware analysis report

Static analysis result for SHA-256 55b66190ca23809a…

MALICIOUS

PDF

71.1 KB Created: 2021-01-31 13:09:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0a988a68926e3184666a1059b62fd0a4 SHA-1: f6901a7b0d48ab6471426970f8ad6ba906c92ae0 SHA-256: 55b66190ca23809a363bd83b209c1dd5c1ae44419d5e67046a6284f41f17fda7
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://leonvi.ru/123?utm_term=oddworld+stranger%2527s+wrath+apk+data+mod PDF link annotation
    • http://vijoxufomodazug.22web.org/request_letter_for_approval_of_uniform.pdfIn PDF document text
    • https://xidoferowugefu.weebly.com/uploads/1/3/4/3/134348033/af27f11c54871.pdfIn PDF document text
    • https://cdn.sqhk.co/nekuripafi/JxijBgg/lullabies_relax_sleep_baby.pdfIn PDF document text
    • https://cdn.sqhk.co/litawoxelida/ljeie05/facts_school_website.pdfIn PDF document text
    • https://kezexawu.weebly.com/uploads/1/3/0/8/130814062/zugoxap.pdfIn PDF document text
    • https://jupikojeba.weebly.com/uploads/1/3/0/9/130968920/nuwolida.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/JjiJIif/bugam.pdfIn PDF document text
    • https://cdn.sqhk.co/liweruruzed/ZW7yjd8/black_and_white_neon_aesthetic_wallpaper.pdfIn PDF document text
    • https://noremovex.weebly.com/uploads/1/3/4/8/134883944/vodilutedetemu.pdfIn PDF document text
    • https://cdn.sqhk.co/zutijujes/ZOhjFgd/melody_gardot_sting_album.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dabinonasibu.epizy.com/xuborupulibigajimomor.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/jinko_hai_betiyaan_lyrics.pdfIn PDF document text
    • http://nedilopasosugop.epizy.com/nanotechnology_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/florida_fe_exam_study_guide.pdfIn PDF document text
    • http://magikid.epizy.com/aptoide_apk_for_android_2._3._6.pdfIn PDF document text
    • http://vetuvawefaxuta.rf.gd/95035608022.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/gawaw.pdfIn PDF document text
    • http://defisunukotizid.epizy.com/beyonce_brown_skin_girl_lyrics_video.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_off0000da47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA47 5592 bytes
SHA-256: a2ba5e13711415cc2e8600a78fe1324cf15d45f1da36475d6043a6a776efbcca
font_01_sfnt_off0000ed3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED3C 9964 bytes
SHA-256: 71796491949d8076c6b192a01375d6b89b9756a492980c74e2e27ee2f18ba316