Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc04f81704a1b509…

MALICIOUS

PDF

77.5 KB Created: 2021-05-09 05:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c45ad13666fa8ad47ed648ce7b63c158 SHA-1: 9af1f56efc1c8b545a32bca6ac9b72650f748b63 SHA-256: dc04f81704a1b509537ec1fd392ad693631ce0407870d4223554b943dbfb7f19
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a heuristic firing for an external URI, pointing to a suspicious domain 'baarspo.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL is the primary indicator of compromise, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/strik?utm_term=fitbit+flex+hard+reset PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465930/normal_605a7ab3d154c.pdfIn PDF document text
    • https://fubareno.weebly.com/uploads/1/3/1/4/131482864/foxeseze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499023/normal_602f9a6f56baa.pdfIn PDF document text
    • https://banepopewux.weebly.com/uploads/1/3/4/2/134234854/pelemofurazekas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415768/normal_5ffd7387b44fb.pdfIn PDF document text
    • http://prod-fruit.space/evaluna_y_camilo_cancion_nuevad94ou.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_600fb14097230.pdfIn PDF document text
    • http://yatvoyya.fun/117634220456mmx0.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/luropi/waliromaz.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/interview_question_describe_a_difficult_situation_answer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f38d68e7-ce46-4817-bb36-8fee3a2b7fd7/7727148963.pdfIn PDF document text
    • https://dda5c79a-a75d-44d9-a006-48dec3bfe172.filesusr.com/ugd/115d6e_ca4526a559274422bbd6511ee53aa7a4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/15cc6340-e024-4cf4-815f-99c615f0c8cb/diversity_statement_sample_faculty_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61fd9e9e-6112-4770-aeda-0738692fd010/how_to_print_htv_vinyl.pdfIn PDF document text
    • https://5610d23c-e099-485d-ada5-1c5fec8f01b3.filesusr.com/ugd/97e063_c8abd44d190748459b858ddba6aa851e.pdf?index=trueIn PDF document text
    • https://e61e9f85-32c5-4861-9fd4-b89109084c35.filesusr.com/ugd/2e4eb4_f03f2df4be7b426880efb6370523a77e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/bloons_td_5_free_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/gtd_templates_for_evernote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7626a32-321d-4b0e-b70b-edea434eca49/xuxadukexozurokorojavinid.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/39230217436.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28E 5156 bytes
SHA-256: 5f2dad2801636985cff6eee4939ead83f30e136c36a8fd87be0c860623138ae5
font_01_sfnt_off00010413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10413 10316 bytes
SHA-256: c83304462475faca3a17d12f2e82dfd57ef462283461845a4fbc837f868ca2f2

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