Malicious PDF — malware analysis report

Static analysis result for SHA-256 023c1379ceeef244…

MALICIOUS

PDF

67.3 KB Created: 2021-02-03 10:47:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: eb10bf45c3d629ced3fd09d55d004642 SHA-1: abe71e8136abf9488540374bda8b46db57660b6c SHA-256: 023c1379ceeef244ed8ed3412f1eec1e851abbadff3b8f4cae3387dc2f9e30a2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to 'bologen.ru', which is likely the distribution point for a malicious payload. The document body, though heavily obfuscated, contains keywords related to puppies, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=dachshund+puppies+for+sale+in+palm+beach+county PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443574/normal_5fd63dc920882.pdfIn PDF document text
    • https://cdn.sqhk.co/bopesajan/geZjjdK/my_mtn_account_is_suspended.pdfIn PDF document text
    • https://vaseviga.weebly.com/uploads/1/3/3/9/133986607/2485206.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/1647306.pdfIn PDF document text
    • http://naykaryadom.fun/65553437815bxmr9.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/jfUihBd/cobra_snake_3d_view.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465024/normal_5ff1f39f7ca18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495385/normal_600fa6ae76255.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375196/normal_600e0a87a622c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447912/normal_5fe6a72b868d0.pdfIn PDF document text
    • https://cdn.sqhk.co/fakomuse/0lvZWNz/regal_theater_union_square_movie_times.pdfIn PDF document text
    • http://espaceabone.com/game_maker_3d_model_creator80i68.pdfIn PDF document text
    • http://tomandbxof.site/pejefumeronegugavepaxotx0fg.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/y9ujg97/73769979025.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/febopa/android_wifi_authentication_error_open_network.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/alkaliczny_styl_ycia_chomikuj.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/63618939551.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/hemas_hospital_lab_reports_online.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_off0000bd3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD3D 5516 bytes
SHA-256: 7042a087a43e7d0e56581e74467972501b2cd34839ef915760f9f948e4255838
font_01_sfnt_off0000cfcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCC 9912 bytes
SHA-256: 22557febf9b307703639315999b75938bca01ecb53dbbad1e81e6be668b953ef
font_02_sfnt_off0000f1a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A8 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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