Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a3dd18b4e5edfae…

MALICIOUS

PDF

72.0 KB Created: 2021-03-01 19:50:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8e0942355134cb94de8f85e601273485 SHA-1: 6e0daefccb29c7d2a3fa0fd6a7e60eeed295cd89 SHA-256: 7a3dd18b4e5edfae4b13e958b41f6f80f1b53a41cf08585078545dfe9f335138
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://golowaki.ru/wix?keyword=journey+to+topaz+full+book+pdf PDF link annotation
    • https://tunoworuv.weebly.com/uploads/1/3/4/0/134017870/kafiv-boxipirapili.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/iThhjco/8654253703.pdfIn PDF document text
    • http://xiruzox.mygamesonline.org/devefavoxuravolisoviluxob.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/clFjeN1/kiboxojajowezozulop.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/gfFifl3/folilexivimibuzezo.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/how_to_unscrew_tight_jar_lid.pdfIn PDF document text
    • https://doboxupa.weebly.com/uploads/1/3/5/4/135401174/7059780.pdfIn PDF document text
    • https://cdn.sqhk.co/noneniwetav/HLjjyia/dupif.pdfIn PDF document text
    • https://xijitivagafe.weebly.com/uploads/1/3/4/7/134709267/6028908.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485569/normal_5fcc478ad4157.pdfIn PDF document text
    • https://zunitaxipef.weebly.com/uploads/1/3/1/3/131398356/bosalufiwijofusibu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pujumek.myartsonline.com/96763613975.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/barracuda_ng_firewall_configuration_guide.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_off0000def5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF5 5204 bytes
SHA-256: b7dcc9f04b6ef04db812a5db40630c32de73149406283bfcdc2356597d66ce5c
font_01_sfnt_off0000f0c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C9 10208 bytes
SHA-256: d84cd61662365037aea33bf67e9731930a1bce58d0b1998d5a3fe0344dd703a5