Malicious PDF — malware analysis report

Static analysis result for SHA-256 770af71ee07db97f…

MALICIOUS

PDF

73.4 KB Created: 2021-02-28 11:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 370f78718bb380522766de15d424cf84 SHA-1: d1d602e955b567ae1a7b27597c7abbab400e309d SHA-256: 770af71ee07db97fc7624caa9470f91d870c6f998223eed5aa0acbb1eed49a13
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://golowaki.ru/wb?keyword=how%20much%20is%20directv%20genie%20for%20existing%20customers PDF link annotation
    • http://ruseseru.iblogger.org/nih_consortium_agreement_template.pdfIn PDF document text
    • http://pelobana.66ghz.com/facebook_lite_mod_weed_modificado_apk.pdfIn PDF document text
    • http://dronextactical.xyz/rijewujanegisaluribx0ne.pdfIn PDF document text
    • http://izzzaaa.space/harry_potter_and_the_cursed_child_download_ebookmsa7o.pdfIn PDF document text
    • https://nopuxexej.weebly.com/uploads/1/3/4/4/134498230/10b43.pdfIn PDF document text
    • https://pudisemibupar.weebly.com/uploads/1/3/4/0/134096773/8962586.pdfIn PDF document text
    • https://dibalinelig.weebly.com/uploads/1/3/1/3/131380687/zakekuvofizif_wujilug_lezozagawidozus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476268/normal_600fe7be932bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489716/normal_6014b7fb361b9.pdfIn PDF document text
    • http://prostotit.site/disorders_of_consciousness_clinical_guidelineszd4my.pdfIn PDF document text
    • https://velineninebag.weebly.com/uploads/1/3/4/6/134608195/xitosewe_purotupuperol_mikuzavilefe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ratadipemor.epizy.com/fufarepebugexeda.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/wukotarelifafapenog.pdfIn PDF document text
    • http://wefixewixe.rf.gd/terjemah_burdah.pdfIn PDF document text
    • http://simorunobulo.rf.gd/87171117209.pdfIn PDF document text
    • http://nividibewejoba.rf.gd/53086390105.pdfIn PDF document text
    • http://zozoramotuwiv.rf.gd/ussr_anthem_sheet_music_tuba.pdfIn PDF document text
    • http://rikasajase.rf.gd/bugufolador.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_off0000dfee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEE 5372 bytes
SHA-256: 51ebff7c2d10d376da2946a3c2ae52ef23902935690c8e1f27aa7f17b277a96b
font_01_sfnt_off0000f22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22C 10664 bytes
SHA-256: 44e5dd2ad717bc855223407c6689f1cbad8d08f9e774ed38dc7a649e1ffc2de2