Malicious PDF — malware analysis report

Static analysis result for SHA-256 665c2c16cc5da41e…

MALICIOUS

PDF

79.1 KB Created: 2021-03-30 22:51:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 83f2de195cf65749ecbae853500bde68 SHA-1: 15bb9791d4148143b239d49314b0500d39c3a710 SHA-256: 665c2c16cc5da41e9390d3963dfae4308d6132c121064d79d8f770f68653ef35
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 0.9997

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://jumiwimov.ru/strik?utm_term=why+won%2527t+my+garmin+gps+connect+to+my+computer PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482617/normal_5fcf79d859390.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475729/normal_5fcd3572dbb21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492573/normal_600c8b02542af.pdfIn PDF document text
    • http://lbaranaydin.com/60189215960hpzui.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467325/normal_605b7c3daee86.pdfIn PDF document text
    • http://ig-copyrightviolation.com/bowogijokifhpr5.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/lerezazo/lancair_iv-_p_propjet_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/rijufigegavifodanuti.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/articles_of_incorporation_sample_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/949cd79e-a336-485b-8d00-f404f97c85a1/dolejifoweraneguvoxoru.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/brinker_capital_change_of_address_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/92750715407.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/cracked_regular_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/how_to_spot_ideal_team_player.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/weber_smokey_mountain_brisket_cook_time.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66e7c006-2763-44e8-b038-a78c2d29c34c/when_should_transmission_fluid_be_changed_in_honda_odyssey.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/20196144271.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/la_nueva_defensa_fiscal.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/english_to_urdu_sentence_translation_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/53424483225.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/82447205342.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6ED 5556 bytes
SHA-256: 1c19d7e4e7a8fde7dbf3077963a1362c7a05cc93b91e9eb3a6dd3fa362663207
font_01_sfnt_off000109d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D1 10816 bytes
SHA-256: ba174a2343a603d00275547b884cc2692a66e0c58183b24def2f52da8664e247

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