Malicious PDF — malware analysis report

Static analysis result for SHA-256 457d00c00c4ae11e…

MALICIOUS

PDF

72.8 KB Created: 2021-02-07 11:17:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 908ac7e070c1ab7459c20e81f5592ea2 SHA-1: 3e314caa841e16690a91639679e8989d5a359308 SHA-256: 457d00c00c4ae11e8ddc05347571786238f61f312fe6a210a8d44e60a71d06e7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://seumenha.ru/aws?utm_term=7+eleven+malaysia+financial+report PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471275/normal_60103f8854808.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465691/normal_5fd15d0bdee43.pdfIn PDF document text
    • http://baugroup.info/solucionario_hibbeler_dinamica_12_edicion8b6ag.pdfIn PDF document text
    • http://sewulege.22web.org/mopakij.pdfIn PDF document text
    • http://abwaab.su/township_and_range_system_quizletxax8z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422161/normal_601473e5ad107.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421960/normal_5fcc6c8e9368d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486994/normal_5febe94c7c5ba.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/rafiralexezol/rockettheme_joomla_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/bum_bum_bhole_images.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/bafajabiwupexif.pdfIn PDF document text
    • http://govakuvi.epizy.com/the_pig_dead_by_daylight_guide.pdfIn PDF document text
    • http://tiwemevi.rf.gd/26945857152.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/virus_cleaner_apk.pdfIn PDF document text
    • http://kelopejawutan.rf.gd/smoke_patch_pes_2019.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_off0000de50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE50 5308 bytes
SHA-256: f49f1fcdeacd64f70bddf71c6c270381987982544f3f4d623ad12beafef4a695
font_01_sfnt_off0000f05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05C 11164 bytes
SHA-256: 7d40af72b993f9cd0384146c7cbdc2a540dcadfd513f76ac0b5858dfaf9e42b9