Malicious PDF — malware analysis report

Static analysis result for SHA-256 562bbcbd85ec5ab0…

MALICIOUS

PDF

76.4 KB Created: 2021-02-12 10:11:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 26a20368394360fa3debbceeea741f72 SHA-1: b5bee0a5cd267aad70ddd291c2e2cce7e7dc46e8 SHA-256: 562bbcbd85ec5ab0ceef32270f7c8069cd2f23a2a968e75180c0b23eb7cbeb6f
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to product names, suggesting a lure. The ML classifier and ClamAV detection strongly support the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/123?utm_term=oral+b+pro+7000+brush+heads In PDF document text
    • http://rewutudot.iblogger.org/259206993.pdfIn PDF document text
    • http://yozi.store/divenonaluxabafetewitate4eudg.pdfIn PDF document text
    • http://raifaisentapp.online/38236328603hekbr.pdfIn PDF document text
    • https://cdn.sqhk.co/zanaforare/gjd82hb/define_feisty_in_a_sentence.pdfIn PDF document text
    • http://auth02mobility.com/xetojkqbec.pdfIn PDF document text
    • http://haifaiv.ru/kms_activator_windows_10_enterprise4z9tv.pdfIn PDF document text
    • http://dvestideyli.xyz/lidl_application_form_answersp4i42.pdfIn PDF document text
    • http://muziwavesos.iblogger.org/articulos_cientificos_de_nutricion.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jezekemunidup/compartment_date_sheet_2019_class_10_pseb.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/firefox_60._8._0_esr.pdfIn PDF document text
    • http://vawujularow.rf.gd/full_form_of_ktm_motors.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/biodata_format_for_marriage_online_editing.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/muwamejorunowu.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/whirlpool_stove_parts_manual.pdfIn PDF document text
    • http://xuvatifovefad.epizy.com/66407696062.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/17949574316.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC73 5084 bytes
SHA-256: ed1b9363fd5f39bd7fb0f27d457a9a13588b45b54b376c68c532a82191a2a614
font_01_sfnt_off0000edbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBC 11404 bytes
SHA-256: e72c290b080e80c5d7a8a893c8a6a32b38899d26699b7315f8651f271f37b185
font_02_sfnt_off000114b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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