Malicious PDF — malware analysis report

Static analysis result for SHA-256 a33c6fd518328676…

MALICIOUS

PDF

73.1 KB Created: 2021-04-08 00:37:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 3bde341502ee0fd2a0fa5df2d5895b9d SHA-1: 55909ec04a432daf126b63fcd485dddcea766a4e SHA-256: a33c6fd518328676e483b225ca70f9e262ea1a0a6527862787725bad09d449e9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://vilenefex.ru/wix?keyword=everly+quinn+vanity PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403118/normal_605a1b77b2cad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485001/normal_606649ee22459.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425726/normal_6052d16790d58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416496/normal_6004adcdd2b69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479254/normal_601003e575eab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471099/normal_5fef6849270dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_5fe79779e1bb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464873/normal_5fcefa470ad56.pdfIn PDF document text
    • http://sosogemizibu.mypressonline.com/96264213949.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477183/normal_6017259e8b6ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452377/normal_5fdea3becde50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486994/normal_60430c5eba068.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/452b67f8-32b3-4853-9c7c-e24938ae1503/how_to_lie_with_statistics_darrell_huff.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6c923ec-8b76-49a4-9823-af9168ac449f/the_possibility_of_evil_multiple_choice_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/fujixajime.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/nagiduvabejowibuzidot.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/16882628712.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/biggles_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4081e41d-823b-485c-8a68-552e094e51c2/totipumekapebigerabitejan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3960bec7-4b06-49d5-9d53-a51dafc4d9ce/how_to_share_an_event_to_a_group_page_on_facebook.pdfIn PDF document text
    • http://manuwakagekewu.onlinewebshop.net/99902849764.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/bafg_anlage_2_zum_formblatt_1.pdfIn PDF document text
    • http://muluwokixo.onlinewebshop.net/telujusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/617623e2-a6c0-4266-8957-8e3650a33f93/how_many_decibels_is_a_dishwasher.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_off0000dff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF4 4748 bytes
SHA-256: 727301c0df9d2f305b1a0d6cb8514e8c0fb7d0bdebd8c41ce7086731c6e860a9
font_01_sfnt_off0000f03d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03D 11380 bytes
SHA-256: dfa7830ae0b980f0d920223c5829fdb1eee295a91558040cd5f1c8c055345ac1

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