Malicious PDF — malware analysis report

Static analysis result for SHA-256 13d8e41d2f579799…

MALICIOUS

PDF

95.8 KB Created: 2021-03-22 21:32:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cecdc87af7070a3cc4fc851056daf4f0 SHA-1: b3252ccd7e865e723c17752746dbbdbc56f4f1ca SHA-256: 13d8e41d2f579799fc6a7b9c28b67556e6f09c48e42814c8070cfa2efc2de26a
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 0.9995

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://dafemum.ru/award?keyword=medicinal+mushrooms+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417818/normal_60348d0c7c51b.pdfIn PDF document text
    • https://cdn.sqhk.co/poturofivat/iihe4rF/74453489476.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443344/normal_5fcafe0525afa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471691/normal_5fe43380d4b0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_5fd2d46b2d841.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475987/normal_5fce36a278d21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401703/normal_5ff2498fa47c0.pdfIn PDF document text
    • http://sweetygirl.club/21592587963g17cq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475997/normal_60318b3564eab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415045/normal_60331e078ce27.pdfIn PDF document text
    • http://forecast.bet/stroke_assessment_form_physiotherapykizyu.pdfIn PDF document text
    • http://edevletorg.com/530009038758rmu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482219/normal_5ff6bd937f25a.pdfIn PDF document text
    • http://instofficial.online/how_to_fix_a_dishwasher_that_wont_fill_with_water665ul.pdfIn PDF document text
    • https://cdn.sqhk.co/jukapaba/kjejfjj/dengue_national_guideline_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/pijavagoke/Hlgeiiz/near_earth_asteroids_2029.pdfIn PDF document text
    • http://new-leggins.site/viper_remote_start_error_manual_transmissione9t6s.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/pokixovuxik/cardiff_sixth_form_college_boarding.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/how_much_is_the_train_from_nj_to_nyc.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/2004_dodge_ram_1500_5.7l_oil_type.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/dance_like_song_download_mr_jatt.im.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/subway_map_nyc.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/all_gwent_cards_guide.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_off00013ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AD3 5400 bytes
SHA-256: 52d7b343d54363d572be5e8b5729edc401f17493bdd208bb68d23e532315c890
font_01_sfnt_off00014d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D0C 11004 bytes
SHA-256: 795484fb11512ba82f1dbb9f478c69492117745c15045fd8837c1c788dadbc4a

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