Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e60d4e23743893c…

MALICIOUS

PDF

51.7 KB Created: 2020-10-15 13:58:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 24216d05257ccf76fba8e1845a95de95 SHA-1: e3dc600a789332192a3d3b129abbb74bc840be7e SHA-256: 2e60d4e23743893ca306d8597482fd63ba419c43ae8287e4d0bd645bcc39ff6d
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/pify?keyword=android+java+write+inputstream+to+file In PDF document text
    • https://site-1043128.mozfiles.com/files/1043128/2952499825.pdfIn PDF document text
    • https://site-1039906.mozfiles.com/files/1039906/89355044101.pdfIn PDF document text
    • https://site-1048442.mozfiles.com/files/1048442/28885321792.pdfIn PDF document text
    • https://site-1042889.mozfiles.com/files/1042889/5603808127.pdfIn PDF document text
    • https://site-1042204.mozfiles.com/files/1042204/73293207015.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/10610.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/2379673.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/53934b0627365.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/8807337.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/ruxozukozuvazu.pdfIn PDF document text
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/tawodesovugemoz_zebum_nejipujopud_videbonemidune.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/zofijijitotuwav-madozanog-bikupadejemixa.pdfIn PDF document text
    • https://pejapuvurexoku.weebly.com/uploads/1/3/1/6/131636728/0995777bbcfe7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/36239ad3-58e2-4be7-960f-19d91c44edce/1961244301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95ca98ff-2bd6-4703-b0d1-c510882b7d48/memawogivavizilexoxurus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fed9727c-635f-4fcb-9227-9708106343db/xofakirewamijijosedo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d49c0eb9-79f6-4165-9c27-ffd9d52fea8f/xenagurodupunob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59548e9b-ea68-4b4c-8098-36d72d37ea66/xatipenuwilusoraladame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bddea647-9385-4f51-bcde-2463afb36f56/rilukaverumagiziraniz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd70f29b-9ce4-44da-9728-219089d06ba2/76230473887.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000745f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x745F 5404 bytes
SHA-256: 517337e55aef48133b5ab6f16bab3824626a72578ea7078ce5a6716b21b726c1
font_01_sfnt_off000086bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BD 10080 bytes
SHA-256: b807aca0a33f5c7cee36975bfd8a17fd8277e3e3dd7bad259741309c9a1baa22
font_02_sfnt_off0000a968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA968 16820 bytes
SHA-256: 51822d07a451bdb628cdc17bde7fb1afe0005e453ebcb8bf560b18aaf3d7ee10