Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be210a1fd62c8ed…

MALICIOUS

PDF

79.9 KB Created: 2021-03-19 14:44:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2e1ee3c2c41ab91a1dd70444058d1068 SHA-1: 0e511013ebdf3cdc524e3715faa88bab16a321d8 SHA-256: 6be210a1fd62c8ed38ea491008ecfeb84f5dc4d89c06477b76dc7a3e93924a61
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are SEO-themed, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs, such as https://golowaki.ru/strik?utm_term=garmin+forerunner+620+smart+watch, are likely used to redirect users to malicious sites. No scripts were extracted, but the PDF structure itself is indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • 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/strik?utm_term=garmin+forerunner+620+smart+watch PDF link annotation
    • http://storeplus.pro/jesulzde0w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476127/normal_5fedf78728a05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464082/normal_602193f8c2330.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/67943773559.pdfIn PDF document text
    • http://my-favshoph.online/601285112850i3x4.pdfIn PDF document text
    • https://jifafaxima.weebly.com/uploads/1/3/1/8/131871415/9552923.pdfIn PDF document text
    • http://lozipazom.sportsontheweb.net/fikude.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/just-in-time_systems_are_considered_part_of_which_primary_activity_in_the_value_chain.pdfIn PDF document text
    • https://mafizawejibon.weebly.com/uploads/1/3/1/3/131383772/764309.pdfIn PDF document text
    • http://blockhcain.host/vicks_vaporizer_v150sgn_manual2ahlc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406169/normal_600de9fbb2da0.pdfIn PDF document text
    • http://vehicleusains.com/tekugedapegikavawifisos8awed.pdfIn PDF document text
    • http://bcpzonasegurape2-viabcp.com/154864227186mcdh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409621/normal_60053b3d22097.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sutexuvidag.myartsonline.com/coordinating_conjunctions_worksheets_for_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/73496680114.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/48980554275.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/cmie_report_upsc.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/30971026843.pdfIn PDF document text
    • http://zorijefugixor.atwebpages.com/24154570430.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/62934482069.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/along_for_the_ride_movie_2000.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/android_admob_smart_banner_height.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/wijusuvimoxasonapefa.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_off0000ee12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE12 5640 bytes
SHA-256: 95419ac356b76fc38b8e825463e9d5b2f906cbe62d324bff543be25b47f04dd2
font_01_sfnt_off00010131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10131 21684 bytes
SHA-256: cae9b765f670f557a70d02c046e0002f878df3fb350db6b3075f25a0a1112d81

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