Malicious PDF — malware analysis report

Static analysis result for SHA-256 e51c27e23d79a9eb…

MALICIOUS

PDF

75.0 KB Created: 2021-04-04 02:06:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6c00e36e82ab086f4a3fca8b549bfc4b SHA-1: b97fe138409afd9e41d0b8a556f848401288a4b2 SHA-256: e51c27e23d79a9ebf52cf9f3ccc21c94a658f85d0339374e1d35422471d85998
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://jottigo.ru/award?keyword=que+es+parestesia+pdf PDF link annotation
    • http://lnstagram-blue-badge-form.com/cs_deals_bot9c0ez.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/bhfjjgd/piffle_game_twitter.pdfIn PDF document text
    • http://ridaxom.iblogger.org/relimojopiremikegop.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/gS8wFia/kilinufunifemadagesul.pdfIn PDF document text
    • https://cdn.sqhk.co/zesunotu/hiGig5h/interesting_facts_about_meerkats_ks1.pdfIn PDF document text
    • http://natur-bio.space/jopoliligezuqtdkn.pdfIn PDF document text
    • http://eeeeeyyy.space/spanish_verb_tenses_workbookulwzf.pdfIn PDF document text
    • https://cdn.sqhk.co/mubasetopagu/dihujhg/speedo_vintage_swim_shorts.pdfIn PDF document text
    • http://promoocaoameericanas.com/behold_a_pale_horsedz21c.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/benubapopikaj/62277447387.pdfIn PDF document text
    • http://supegawezokex.epizy.com/list_of_common_uncountable_nouns.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06bcffbc-b6ac-4cfd-b17c-1ed1259543f4/does_cortisone_shot_cause_insomnia.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/asmart_remote_ir_pro_apk.pdfIn PDF document text
    • http://fiwiduropewoxo.rf.gd/i_a_s_full_form_in_police.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/44018514087.pdfIn PDF document text
    • https://84d655c4-d84a-4a0c-9c32-0387925bd622.filesusr.com/ugd/6233da_bcef01ca4acd4f7aacbe4b00e7cd702e.pdf?index=trueIn PDF document text
    • http://daroxupotebaliw.rf.gd/2812362774.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/zupofitufavipivalotafe.pdfIn PDF document text
    • http://lodonevubepivor.epizy.com/visavidiraxuvox.pdfIn PDF document text
    • https://4ac36a2f-1533-488b-b282-cf34cdace458.filesusr.com/ugd/bcfc12_af6d7a42ced0416c926cfc75f163bbcc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4437e7e9-324d-4d90-9238-f06ab51a5f71/47736266576.pdfIn PDF document text
    • https://931f52e6-cb68-4a93-8e02-54808d33f8b6.filesusr.com/ugd/6290de_8a15f6a4b19144b1bdfb33056ad8ad4a.pdf?index=trueIn 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_off0000e811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE811 5064 bytes
SHA-256: 789d06fe5f3253748df0ee7e72cddce79099271fc639c31a99501b13c4588845
font_01_sfnt_off0000f95a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95A 11416 bytes
SHA-256: 3082f50be84a43d8a6f001fb4a91a793598c62bfb4370b3cef5aa81416f3bd23

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