Malicious PDF — malware analysis report

Static analysis result for SHA-256 185391670321ded7…

MALICIOUS

PDF

78.5 KB Created: 2021-02-26 19:25:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: d761e6dfceff7f867be3f3a1ff2a9bce SHA-1: af2f81ff0370f1a5977c16ca282b57b992acb8aa SHA-256: 185391670321ded7ea3889c3e6a9a2e1276da5e9b45b7f9220a81887e9bb2b41
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests it functions as a link farm, directing users to numerous distinct hosts, likely for malicious purposes such as phishing or malware distribution. The embedded URLs and the PDF's structure support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://seumenha.ru/wix?keyword=snake+light+commercial PDF link annotation
    • https://ripaduwik.weebly.com/uploads/1/3/5/3/135311581/33048.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/jikelikedamopukataridab.pdfIn PDF document text
    • http://bejisosubonito.sportsontheweb.net/84022717722.pdfIn PDF document text
    • https://sasurejif.weebly.com/uploads/1/3/5/9/135966776/9654956.pdfIn PDF document text
    • http://krokoboko6.xyz/photoshop_brushes_free_paint_splashpqh3b.pdfIn PDF document text
    • https://pafirolexorawu.weebly.com/uploads/1/3/4/6/134612045/xajovemoxupakaruzoti.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/how_to_understand_integral_calculus.pdfIn PDF document text
    • https://dasujodiket.weebly.com/uploads/1/3/4/4/134481559/5458724.pdfIn PDF document text
    • http://frontglass.xyz/bojegoxoxopapusiwogoc260z.pdfIn PDF document text
    • https://rosanibo.weebly.com/uploads/1/3/4/8/134873488/garejo-zilulopodilum-titeja-ribezezujuso.pdfIn PDF document text
    • https://jibijuzevigux.weebly.com/uploads/1/3/5/3/135333604/063b657f687.pdfIn PDF document text
    • https://cdn.sqhk.co/dakuwuwuzije/bVGjie9/hard_rock_cafe_music_list.pdfIn PDF document text
    • http://netewe8.xyz/pesawilowdqxo.pdfIn PDF document text
    • http://creamwalls.online/80017744515berh4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://piwakitidi.onlinewebshop.net/garmin_nvi_2597lmt_update_problemen.pdfIn PDF document text
    • http://zogosugo.onlinewebshop.net/motukigakeri.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/vomavonopasazirededoxado.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_off0000ee9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9C 5204 bytes
SHA-256: af9a717de4d5fcfaf9ad011fa3b0b570c9e91151ce6f3815173601c16e620469
font_01_sfnt_off00010024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10024 14240 bytes
SHA-256: 42983e27ad18535450b74d65a2001a714cb81718ed6a5ce87500314dd764d94f

Open this report in the interactive analyzer, or submit your own file for analysis.