Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae685abd290eb2f…

MALICIOUS

PDF

93.8 KB Created: 2021-06-04 11:25:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0be3194c1fa2a494c30129efcc8f283a SHA-1: 287dc48055577cfe3cbb31bc8226c965407c98fe SHA-256: eae685abd290eb2faeb0f04f20ed2b9739ae18595b895fa2d889e5c0518697e0
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many pointing to disposable hosting services, indicating a link farm or SEO manipulation scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://philabc.ru/pbw?utm_term=there+is+a+fountain+filled+with+blood+trinity+hymnal PDF link annotation
    • https://pugefaguza.weebly.com/uploads/1/3/5/2/135299010/2c7184f5653ea47.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/bitanomemuxari.pdfIn PDF document text
    • https://jagewimaw.weebly.com/uploads/1/3/4/0/134012974/pujogixefe_guxugijibovo_lupogufusobodet_butewenasore.pdfIn PDF document text
    • https://gamepasak.weebly.com/uploads/1/3/4/1/134109087/6824272.pdfIn PDF document text
    • https://mamifonor.weebly.com/uploads/1/3/1/1/131163935/fasat-lozakewel-sufunisifux.pdfIn PDF document text
    • https://tekadepaja.weebly.com/uploads/1/3/4/3/134341299/12f8c479.pdfIn PDF document text
    • https://fajuvupo.weebly.com/uploads/1/3/5/3/135310445/vamexesanuverab_jaxaxawirerub.pdfIn PDF document text
    • https://zisirusezudi.weebly.com/uploads/1/3/4/8/134846547/pakamom.pdfIn PDF document text
    • https://murikupa.weebly.com/uploads/1/3/4/4/134481598/646789.pdfIn PDF document text
    • https://nugaruxiboxora.weebly.com/uploads/1/3/0/7/130738781/bb2f168442.pdfIn PDF document text
    • https://xulopoxaxuwuzoj.weebly.com/uploads/1/3/4/5/134509354/917452.pdfIn PDF document text
    • https://sopunarexij.weebly.com/uploads/1/3/1/8/131857112/8c8fbee6f1ceb7.pdfIn PDF document text
    • https://xizunobalik.weebly.com/uploads/1/3/0/7/130739811/sirijelawi-wegez-tabedo-fugulizakote.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faxamom.pbworks.com/f/how_to_read_nichq_vanderbilt_assessment_scale.pdfIn PDF document text
    • http://damopijos.pbworks.com/f/61800677554.pdfIn PDF document text
    • http://fuxedemama.pbworks.com/w/file/fetch/144496098/notif.pdfIn PDF document text
    • http://zizovitunex.pbworks.com/w/file/fetch/144482631/73007347087.pdfIn PDF document text
    • http://nipekari.pbworks.com/w/file/fetch/144603603/zavedazivejezuf.pdfIn PDF document text
    • http://pakesobiroge.pbworks.com/f/48110260292.pdfIn PDF document text
    • http://xibosini.pbworks.com/f/rokebaroxukik.pdfIn PDF document text
    • http://jebodigezev.pbworks.com/f/39546690575.pdfIn PDF document text
    • http://giribuv.pbworks.com/f/how_do_you_manually_unlock_a_maytag_front_load_washer.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_off0001313e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1313E 5428 bytes
SHA-256: 0679058ed5e35d032cd4b552a041bc60a03ae0c04c0719b3ccdfdc08f7279547
font_01_sfnt_off000143a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143A0 10480 bytes
SHA-256: 2d8acb4b962f0275e229de93c05f66eca7cd359566de2249d1de393abd64d30f