Malicious PDF — malware analysis report

Static analysis result for SHA-256 a99b46db2d68ca9a…

MALICIOUS

PDF

243.0 KB Created: 2021-03-20 03:06:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8068bbd439e936941a0a8925d1a35ac3 SHA-1: ab64c4a984fc7821a1bf561c47f92d7e8233c2cd SHA-256: a99b46db2d68ca9a479e8f4cb3251852e401777432cac646d00535ffbae1a664
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'xezojetit.ru' suggests the document is designed to redirect users to a site for downloading malware or engaging in phishing. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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://xezojetit.ru/123?utm_term=bazaar+movie+hdrip PDF link annotation
    • http://m-laskin.ru/come_away_my_beloved_updatedzorl7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409257/normal_604e4e13c7626.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381287/normal_6028e8d0cdf1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384461/normal_600b086f6d733.pdfIn PDF document text
    • http://romeoplanet.club/mefomabadolojuki8lqmm.pdfIn PDF document text
    • http://creditscorehelp.info/comparative_income_statement_template_excelyqlpj.pdfIn PDF document text
    • http://lnstagramcopyrightmanagement.com/7359026351871r7i.pdfIn PDF document text
    • https://cdn.sqhk.co/tegatiwuwax/iiTjbjE/netflix_stock_split_price.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372985/normal_60297471154d6.pdfIn PDF document text
    • http://zubiki.top/panelview_plus_1000_software_free_download6np3y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449771/normal_5ff968bff07d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498834/normal_60038f12ce48b.pdfIn PDF document text
    • http://www-sfr-fr-monespace.com/upstairs_downstairs_brain_worksheetu8fex.pdfIn PDF document text
    • http://ig-about.net/blank_map_of_the_world_to_colour_in1qsb8.pdfIn PDF document text
    • http://falakumisiwubaw.iblogger.org/lararapileduluwiloke.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456671/normal_5ff258e06e436.pdfIn PDF document text
    • http://ionatr.space/21000108136zy0k9.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/jf8Eoig/dosifikesuladinegapelu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500200/normal_604d0cc27045b.pdfIn PDF document text
    • http://regse.website/marvel_movies_in_order_to_watch_timelinert1ik.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
    • http://sakonolib.rf.gd/fokasovupomi.pdfIn PDF document text
    • http://tubupokus.rf.gd/gate_syllabus_2020_civil.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000118c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x118C5 199168 bytes
SHA-256: 4d57ac04ab68d64f45100d64d3121cfd4352f729908edd80dcea220f54d94b80
font_01_sfnt_off0003617c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3617C 4752 bytes
SHA-256: cbcabddeca22edb1c2518e0fa78fdb45e26d068594293a17d647e4daf05759f8
font_02_sfnt_off0003719f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3719F 11136 bytes
SHA-256: a3cdee7cfaf5d515b10b9ac7efac72824d058d47fd08ea1fbf18da7dfe4ea3c4
font_03_sfnt_off000397c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x397C5 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
font_04_sfnt_off0003acf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3ACF3 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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