Malicious PDF — malware analysis report

Static analysis result for SHA-256 846d14302810f64f…

MALICIOUS

PDF

78.2 KB Created: 2021-03-17 03:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a163daaa3c3653fbf474fb6452f9e2f0 SHA-1: 58e72e38539e01b9998ac4d1ef59432f832c5e21 SHA-256: 846d14302810f64f6e27296fbdf4c25bac67d4c2cd165d26793c4a8e2a0bd005
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://botokaw.ru/wix?keyword=ichigo+full+hollow+costume PDF link annotation
    • http://dimozakebaba.scienceontheweb.net/cutting_for_stone_summary_sparknotes.pdfIn PDF document text
    • http://dafagaketa.sportsontheweb.net/how_to_calculate_molecular_mass_of_sodium_hydroxide.pdfIn PDF document text
    • http://weroserigo.22web.org/46185174292.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/fc6gjje/the_wolf_of_wall_street_trailer_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375352/normal_6011c9bb46d88.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/y6igcHo/34361288533.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470220/normal_6030321843384.pdfIn PDF document text
    • http://xuzerujagojagip.scienceontheweb.net/arabic_to_urdu_translation.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383791/normal_5ffabd3d21faf.pdfIn PDF document text
    • https://cdn.sqhk.co/logubaxe/ihaIbjb/pixel_gun_3d_mod_apk_2019_download_ios.pdfIn PDF document text
    • http://sewototenovaro.iblogger.org/social_demography_books.pdfIn PDF document text
    • http://fuxejezosajusop.22web.org/organizational_structure_template_online.pdfIn PDF document text
    • http://rowomonug.mywebcommunity.org/what_is_an_omb_circular.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368486/normal_6046a455648de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9cf5cc10-3c2e-4e30-ae6b-73ed7beed88a.filesusr.com/ugd/5c2b46_4cee4b0311234d80b398781af3adde09.pdf?index=trueIn PDF document text
    • https://e0fa0743-814d-41de-b6a5-47f787911882.filesusr.com/ugd/89d2ef_8ee7028bbae343fe90cfd1fd8023a41c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wovugi/biotechnology_applications_in_agriculture.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/fiwerikaf.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/88935353862.pdfIn PDF document text
    • http://mijugavagi.epizy.com/fejixik.pdfIn PDF document text
    • https://0778d94d-b67d-49c3-8f6f-43f52d6edec9.filesusr.com/ugd/b85eb0_4e18eb1d1abb412d97a6b7c5259b3ef9.pdf?index=trueIn PDF document text
    • https://a6f18165-9bfd-46c9-8f51-0ab50cd0b687.filesusr.com/ugd/265c7a_963816e8b32d48d5b45c7d650e307f81.pdf?index=trueIn PDF document text
    • http://vatabose.epizy.com/mijor.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/95212053922.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_off0000f40d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40D 5020 bytes
SHA-256: 26195cf9811686e0da4646bba586ab7356cab714f7c4512285873a3070cf2fcd
font_01_sfnt_off0001051e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1051E 11268 bytes
SHA-256: 68d22a99c6a5e0d5df2a94325b376d8ca4045ad7fb9b55d64e2e101ea1fc83cb

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