Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5c1ebbea37c12f6…

MALICIOUS

PDF

77.4 KB Created: 2021-02-20 01:11:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6c77f3467ab3182c526dff6cd2f26510 SHA-1: 6d96c0454681a4c477a82bfa3bcd6302914180fc SHA-256: d5c1ebbea37c12f6c0e2a54f202fe57efb201efd1d38bbf7e26b1f47dbe4c925
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/123?utm_term=best+stock+for+2020+india PDF link annotation
    • http://heliusdesign.ru/gidukonavojokq0fe.pdfIn PDF document text
    • http://legalvictory.group/the_adventures_of_augie_march_first_paragraphoayxq.pdfIn PDF document text
    • https://jeluxipofike.weebly.com/uploads/1/3/4/4/134490416/nudomomezaw.pdfIn PDF document text
    • http://dvertsoff.ru/wavaguwetogimixujezugo6zzeb.pdfIn PDF document text
    • https://videxopejevis.weebly.com/uploads/1/3/5/3/135333638/a896bd9ab03510.pdfIn PDF document text
    • https://gawobomune.weebly.com/uploads/1/3/5/3/135317514/8398162.pdfIn PDF document text
    • https://duzejuwilana.weebly.com/uploads/1/3/4/8/134879611/ee9cd65a.pdfIn PDF document text
    • http://huaweistoreukr.xyz/361334379641jhsl.pdfIn PDF document text
    • http://busforpay.online/28559826675294tg.pdfIn PDF document text
    • http://exampl1214.com/65911057512ueenq.pdfIn PDF document text
    • http://blue-tick-central.com/nandos_takeaway_menu5yohr.pdfIn PDF document text
    • https://tipozuroboga.weebly.com/uploads/1/3/4/2/134265922/87e460882535f.pdfIn PDF document text
    • http://verifybadgehelp.com/firefox_apk_for_jio_phonemhj30.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/gawabog/33386491475.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/33373559159.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_off0000f13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13D 5368 bytes
SHA-256: d1fa43790a00c08684493d3657734ec3d352d24b01e5e806446f4889c3b16389
font_01_sfnt_off00010397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10397 11140 bytes
SHA-256: 11380803eb28e318ad3fbf8555955574ff4fdc0382c69727fbd1f546129c39e7