Malicious PDF — malware analysis report

Static analysis result for SHA-256 019dcc19a9ac588f…

MALICIOUS

PDF

69.8 KB Created: 2021-03-03 08:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bff94a960c165c5f80fab972c40880c4 SHA-1: b814d206864ef42b25af100559746ba369fd40d9 SHA-256: 019dcc19a9ac588f34ab10517fa487e101d0fa3e631fb9d5d3a5fdb3d3561d09
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=statistics+chapter+10+quizlet In PDF document text
    • http://demuxum.getenjoyment.net/hunter_dps_rankings.pdfIn PDF document text
    • https://mofalapew.weebly.com/uploads/1/3/4/3/134307760/21956c9639.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/easytouch_indoor_control_panel_no_comm.pdfIn PDF document text
    • http://tujidal.mypressonline.com/temaz.pdfIn PDF document text
    • http://tiwunevebir.22web.org/what_does_pre_tied_bow_tie_mean.pdfIn PDF document text
    • http://vulufinagi.mypressonline.com/nobolakuborozan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425759/normal_5fdb88cf198cd.pdfIn PDF document text
    • https://guxiwejibu.weebly.com/uploads/1/3/4/9/134902351/nimusixe.pdfIn PDF document text
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/vanege_pazakanem_ralogesoda_gekolevidi.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/hiehCfj/86505873267.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500447/normal_603ea275ccd1a.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/namilaxadajawo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496580/normal_603c19bf1f866.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/degisapemifa/tabexulubulaso.pdfIn PDF document text
    • http://pewosos.rf.gd/how_to_unlock_network_on_samsung_s8.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_off0000d764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD764 5492 bytes
SHA-256: 3d79b553d580e9df5d1ec83d331b213d2c670478607f3d532e4f2ba465e8584d
font_01_sfnt_off0000ea1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1C 9516 bytes
SHA-256: 37bf142c2e3ac86913fcd11897649a1d92cf828058e7eae37a68ab58c1e647b1