Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cd93a10af4af305…

MALICIOUS

PDF

78.5 KB Created: 2021-03-07 10:34:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2022444bd6902477ecdafdedfb098ad7 SHA-1: 9d173c2753c50fbf0f995d17ca863c8b4f3a6a66 SHA-256: 8cd93a10af4af3052f24950f5d2df2fd95ce638a4d7787a2ef278b53bf41eee9
96 Risk Score

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 0.9998

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
  • 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://nipisod.ru/strik?utm_term=what+is+a+possessive+friend PDF link annotation
    • http://umniashka.ru/foselonuzureroriukx7p.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/w4Bjegh/61339863894.pdfIn PDF document text
    • https://cdn.sqhk.co/zumiredosuwi/jacDnif/duveriboravokijore.pdfIn PDF document text
    • http://reduslim-officialsite.site/what_is_the_magnitude_of_the_frictional_force_between4o06x.pdfIn PDF document text
    • http://creditscoretracking.info/jakiw0vpup.pdfIn PDF document text
    • http://sait-ok.ru/hpi_baja_5b_flux_parts5smsp.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/tcMigji/sikozu.pdfIn PDF document text
    • https://cdn.sqhk.co/lajojeletab/iflghip/adidas_slides_mens_size_12.pdfIn PDF document text
    • http://importants.space/businessman_telugu_movie_in_movierulzgt5dk.pdfIn PDF document text
    • http://instahelpforbusiness.com/negibmnrj1.pdfIn PDF document text
    • https://cdn.sqhk.co/novitovikor/hhidewE/fastrack_bikers_watch_black.pdfIn PDF document text
    • https://cdn.sqhk.co/savaketiju/kYFPMgd/mom_s_word_game_level_12.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/mikibetiv/free_fire_advanced_server_apk_new.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/diferentes_tipos_de_ficha_de_leitura_e_seus.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/mipunexegaxulifedej.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/96821221357.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/15232180379.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/amazon_flex_uk_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/m_a_ka_full_form_kya_hoga.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/arcane_legends_hack.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_off0000eab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB7 5172 bytes
SHA-256: 457df82b3bb9810123c4f9e8b56b29a927fb2bd3c50e0b3bf9c30a3137dc5565
font_01_sfnt_off0000fc54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC54 4848 bytes
SHA-256: 47cb6e6abc7099ff90a863a2f7adaa0f0a36cf2200468900577468b6c4f4e242
font_02_sfnt_off000109de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109DE 10188 bytes
SHA-256: 3d50e3b8f4000f31308e5d982bcef0c4f6c0b1c51870fea8b8726c326a7750af

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