Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a8dd8f31c567bf1…

MALICIOUS

PDF

78.7 KB Created: 2021-03-20 17:09:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 67ddea700e4d548bfb12bd52da1e778f SHA-1: 659c6d2c14d0f1fd9ed51bf8147cfc5c573d6eb2 SHA-256: 2a8dd8f31c567bf1e04413058ee136c5f1d4af2a8e6506c9117b0bbc9d337518
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=annadata+movie+all+song In PDF document text
    • https://static.s123-cdn-static.com/uploads/4475988/normal_5fc72624a2d34.pdfIn PDF document text
    • http://formverifiedbadge.com/servsafe_test_results8kbvi.pdfIn PDF document text
    • http://fresh-ita.fun/employees_credit_union_near_meopjl4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453747/normal_6010957bd1092.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408583/normal_602620397d727.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_6017795456562.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419413/normal_6030504700d1a.pdfIn PDF document text
    • http://opt15.ru/kamaladal0qyx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407085/normal_5ff7f3bb89ea6.pdfIn PDF document text
    • http://rimka.xyz/4637391394342bo9.pdfIn PDF document text
    • http://wopudidadufi.22web.org/dji_naza-m_lite_multi-rotor_flight_controller_system.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480736/normal_5fc8b2a855be8.pdfIn PDF document text
    • http://igme.site/the_god_of_small_things_summary_in_hindiqacez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408323/normal_5fff5fabc109e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zawovasozanadi.epizy.com/arena_di_verona_programma_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/73133490878.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/corrugated_roof_sheets_for_sale_bloemfontein.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/camila_cabello_shawn_mendes_song.pdfIn PDF document text
    • https://4b5f4e46-8b81-4257-bf39-61fc08ba57b0.filesusr.com/ugd/7ea8bb_aee26280f6404c8ea9cf044f1a1897b0.pdf?index=trueIn PDF document text
    • http://tolerikaduvutef.rf.gd/irritrol_kd6_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/79535125992.pdfIn PDF document text
    • http://vutakeba.epizy.com/medical_certificate_form_1a_rajasthan.pdfIn PDF document text
    • http://kemeterotef.rf.gd/87446248954.pdfIn PDF document text
    • https://9a4b5e96-23fe-4021-9525-787506808755.filesusr.com/ugd/b3318b_82b0da8c3e334ad289baf4e2ea2c9831.pdf?index=trueIn PDF document text
    • https://cf62593c-3f62-494e-9ef9-3c2a63ead7d7.filesusr.com/ugd/93dae2_50b4d8fd28ec4ef4839208eb098d2155.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pujirageg/twitter_mod_apk_latest.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_off0000f535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF535 5096 bytes
SHA-256: 2d586ece2512dc51686c47f8b2ae147e54c042b814a64ca041c3067f91b99cfc
font_01_sfnt_off00010682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10682 11420 bytes
SHA-256: e0b3e58199507caf72306777f7244978a994a2988a6e8a462fd675018ceac449

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