Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb3fb5ae8fbe60c…

MALICIOUS

PDF

74.3 KB Created: 2021-02-23 13:17:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 5ed71c25045f6b32214e0eb2fa5ff6a3 SHA-1: 6486f366337a36f2694b217851c56a913654a0d4 SHA-256: feb3fb5ae8fbe60ca39a7f4831a0005d7b7b3283825871d1e068960a1a456201
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are SEO-optimized and point to other PDF documents. One of the primary links directs users to download an application, suggesting a lure for potentially unwanted or malicious software. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/wix?keyword=download+smart+launcher+2+pro+apk PDF link annotation
    • https://cdn.sqhk.co/dogojaseziwo/ifgjBha/fruits_crush_link_puzzle_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426270/normal_6016fff2759d6.pdfIn PDF document text
    • https://vixevugipun.weebly.com/uploads/1/3/5/3/135327752/6203794.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462354/normal_6033f7c5cec42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420248/normal_5fce256de7c38.pdfIn PDF document text
    • https://kepiloxuxamife.weebly.com/uploads/1/3/0/7/130740378/5504450.pdfIn PDF document text
    • https://zomuguwiremadak.weebly.com/uploads/1/3/1/4/131406071/e49d8727663d51c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457298/normal_5fe15f9b0c7cb.pdfIn PDF document text
    • http://ita-yog.space/fpsc_test_questions_and_answersr878z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427079/normal_600f7b509d453.pdfIn PDF document text
    • https://kasasifu.weebly.com/uploads/1/3/4/6/134697732/moriresapuvilaxasatu.pdfIn PDF document text
    • https://cdn.sqhk.co/laruxibut/je8gPVO/giwogulagetukegiluriruvo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465127/normal_5fef1610383f8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bidivo/keystone_weather_report_10_day.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/71646364272.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/tropic_cancer_passes_through_which_states_of_india.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/matal_dance_dj_video.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/kexubiwiwinulililopom.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF5 5436 bytes
SHA-256: 9614c0efa9c7cbc611633fb1a15e36f24cd0cdfc299c8e8e50b8efcf8a76d55a
font_01_sfnt_off0000e151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE151 1872 bytes
SHA-256: 42becf84cfef3af2050d5e7c266acbaeddd1a8cb4cf1814aa6fc565b5bd0bcb8
font_02_sfnt_off0000ea5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5C 10248 bytes
SHA-256: f5785e33b68a0f5463e766c43014a722442f7892683019588d9df95f52d7587b
font_03_sfnt_off00010d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D67 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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