Malicious PDF — malware analysis report

Static analysis result for SHA-256 48e6748c409a971c…

MALICIOUS

PDF

90.8 KB Created: 2021-05-24 19:21:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 8001ad2c6272fa0256cc8d0f2137370e SHA-1: 9bec29906b817d9496eacdbb2271eb9d5fea08b8 SHA-256: 48e6748c409a971cf057e9fd4c71571b4080ec1988d301f14f25a7c763d0c86f
156 Risk Score

Malware Insights

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

The PDF contains a lure related to unlocking iCloud activation locks, directing users to the URL https://mezovuduw.ru/strik. This URL is likely part of a phishing or malware distribution scheme. The PDF also contains a large number of external links, suggesting a link farm or SEO abuse tactic. ClamAV and ML classifiers also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/strik?utm_term=how+to+unlock+icloud+activation+lock+iphone+6+plus+for+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414341/normal_5fcf6b6f82d6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460963/normal_606e246eb3460.pdfIn PDF document text
    • https://xasedomag.weebly.com/uploads/1/3/1/0/131071243/687f3.pdfIn PDF document text
    • https://giduwopevaxotos.weebly.com/uploads/1/3/5/4/135401458/3747957.pdfIn PDF document text
    • https://finukapaxareb.weebly.com/uploads/1/3/4/4/134494590/b86034eb.pdfIn PDF document text
    • https://dadurafiwazozu.weebly.com/uploads/1/3/4/7/134768329/4e27154974c52da.pdfIn PDF document text
    • https://jamibubobew.weebly.com/uploads/1/3/5/3/135322635/7112207b7f.pdfIn PDF document text
    • https://zuxevuzefadum.weebly.com/uploads/1/3/0/7/130775429/voruw-viwewevaxat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384155/normal_602eb54849f2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470220/normal_606a7508918a3.pdfIn PDF document text
    • https://komijeji.weebly.com/uploads/1/3/1/6/131606126/xoleta.pdfIn PDF document text
    • https://nekemobo.weebly.com/uploads/1/3/5/3/135323096/4326628.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/napoledunadigo/how_much_does_an_emergency_doctor_make_in_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/rujonijuruxanaja.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/setekikevigul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aea488b-7f2c-4a45-b462-366751d4cdea/how_to_create_kpi_dashboard_in_sharepoint_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65cf88c8-a14c-4820-b049-0aebb7119966/new_york_algebra_2_and_trigonometry_textbook_answers_glencoe.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/13192963228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1469278-22f5-4439-bef0-f1a9a208d25d/66394570815.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/android_listview_adapter_getview_example.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/bls_for_healthcare_providers_textbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a6a4ef4-f7b5-4984-b334-c55810293472/7117439613.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/nojewa.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/buildbox_cracked_version.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000115ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115CE 5572 bytes
SHA-256: a4f966da034d2b8c4113ce4174d477804be8c6e7bca15fce20962c555407c62b
font_01_sfnt_off000128cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128CD 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0001315b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1315B 12564 bytes
SHA-256: 3f1702c299ecd544f8ca575e2cfafe33660b30e3c9d1280e95368808c6c5ef46

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