Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc1c95d489389ab3…

MALICIOUS

PDF

78.2 KB Created: 2021-01-26 03:38:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 39bf41d86459533a3ec2fdddaaff6f6e SHA-1: d573b40294df15735ffd6e6c2b84968ce3f768b1 SHA-256: fc1c95d489389ab3bf5fa3ec08657aee5701e330092ccda5a02f579eb57c5b4d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/123?utm_term=leonard+cohen+story+of+isaac PDF link annotation
    • https://gumotijilazu.weebly.com/uploads/1/3/1/6/131637190/komelafonoxu.pdfIn PDF document text
    • https://rukururage.weebly.com/uploads/1/3/0/9/130968917/5d130a03a42590.pdfIn PDF document text
    • https://gebobofivogaxe.weebly.com/uploads/1/3/5/3/135308574/fogurozatoneb_gevezodewe_folifokogi_bagonava.pdfIn PDF document text
    • https://feposejixadolo.weebly.com/uploads/1/3/4/7/134744373/kugimivir_tufitewujufinun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495269/normal_5ff438d4d5e2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369915/normal_5ffe4743a4378.pdfIn PDF document text
    • https://webuseki.weebly.com/uploads/1/3/2/8/132814302/pekow.pdfIn PDF document text
    • http://the-english-temple.com/msi_afterburner_overlay_hotkeyfjm8n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371791/normal_600c9a3a170e4.pdfIn PDF document text
    • https://monijakuxit.weebly.com/uploads/1/3/4/3/134362478/5860110.pdfIn PDF document text
    • https://jadotonevuwupu.weebly.com/uploads/1/3/1/4/131407011/f47b947d536f.pdfIn PDF document text
    • http://bahis-sikayet.com/baby_shark_cake_popsip47h.pdfIn PDF document text
    • http://gallery-shop.site/best_ps1_emulator_for_windows_103jqvc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427103/normal_600c95996b8c8.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/mukutud/97064293227.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_off0000e929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE929 5120 bytes
SHA-256: 3d942fd732a65ca1787c4510b9af99113848dd3b2c7f19f35ed9884223e99dfc
font_01_sfnt_off0000fa9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9B 15232 bytes
SHA-256: a105f082793dc54a3359d5aa26b5319f0227b38319f06f48edeb93a43f852bb4