Malicious PDF — malware analysis report

Static analysis result for SHA-256 e302774db997d950…

MALICIOUS

PDF

76.3 KB Created: 2021-03-16 11:32:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: aae22c7a65ec13f3d3d91e806f2c99af SHA-1: d4411d790431f389072ccebfbf3d623e136a7bf0 SHA-256: e302774db997d950159c5b9afb087903e8658335e9cacc71474030a54ea44ed6
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to host malicious content or phishing pages. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a common tactic to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/award?keyword=proof+by+contrapositive+pdf PDF link annotation
    • http://luwakixifotizim.iblogger.org/adding_and_subtracting_like_fractions_worksheets_grade_2.pdfIn PDF document text
    • http://zemegazi.22web.org/joruxitegil.pdfIn PDF document text
    • http://freshmind.net/story_map_ks2_templatewmpok.pdfIn PDF document text
    • http://nesobaka9.xyz/4113558437tyqmt.pdfIn PDF document text
    • http://ttop-shop.com/112780604696uzpw.pdfIn PDF document text
    • http://com-copyrighit.com/online_compiler_java_app7e96e.pdfIn PDF document text
    • http://getplafond.xyz/zozotoxivopevedaseskqdys.pdfIn PDF document text
    • http://firstsecu-paypal.com/kazivapibutogitepwzdct.pdfIn PDF document text
    • http://options.expert/gigopatabijipijinizusuleecqn.pdfIn PDF document text
    • http://prizinsta365.site/corporate_social_responsibility_companies_list_in_pakistanapcir.pdfIn PDF document text
    • http://copyright-notice-ig.com/angry_birds_games_android_freekmfua.pdfIn PDF document text
    • http://visiblawty.com/rockbot_2_full_version_apkph7cn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://45dcde1a-aed5-4138-b95e-a0f768a283bf.filesusr.com/ugd/89441e_056e725f795a415988226479fd04d51a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wekibik/whirlpool_duet_error_code_e1_f3.pdfIn PDF document text
    • http://difugarulid.epizy.com/protein_synthesis_ppt.pdfIn PDF document text
    • https://e4586023-485a-43f1-9451-2d404684c5b7.filesusr.com/ugd/95ff22_e55a3739612c4e2ebc0bacc3ede8cd6d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/format_date_field_in_rdlc_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/understanding_culture_society_and_politics_shs.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD702 5420 bytes
SHA-256: d733b67f32d804f4524d1a4fee4bb1255b8bc7bb219e2c08dfd549deb9baaa4b
font_01_sfnt_off0000e987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE987 10984 bytes
SHA-256: 70f18a882775aa8a5bc9bffbe2056796f7bc4b655bbd21d12a81ce7b4228bcb1
font_02_sfnt_off00010f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F4A 16096 bytes
SHA-256: 292b67320f20e7e38814323bff47001ccb55b5eebb397aea8a254f3e91f57b87

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