Malicious PDF — malware analysis report

Static analysis result for SHA-256 12076e752de1fcb5…

MALICIOUS

PDF

76.5 KB Created: 2021-03-19 10:15:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbcf7fb44d4ccca59caf8864f8a6d380 SHA-1: 25132651b42c795a7522b95caffdab8802426ff3 SHA-256: 12076e752de1fcb555d382895c6fd0c4cd69f1ec1b4cb3817b597172c543604d
96 Risk Score

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, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to negotiation, likely intended to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/aws?utm_term=why+negotiation+is+important
    • http://disconto50.pro/92399852389q14b5.pdf
    • https://cdn-cms.f-static.net/uploads/4486201/normal_6054330485776.pdf
    • http://alexandreablog.com/50188561771onxr.pdf
    • https://cdn.sqhk.co/sosobita/cghrggj/96598810715.pdf
    • https://cdn-cms.f-static.net/uploads/4484631/normal_604a73205b315.pdf
    • https://cdn.sqhk.co/modurasisuwu/niadibB/fobefixag.pdf
    • https://cdn-cms.f-static.net/uploads/4373985/normal_60337532c5e72.pdf
    • http://uscreditmonitoring.info/13_original_colonies_map_worksheetc920q.pdf
    • https://cdn.sqhk.co/miwurazaz/idEfgel/naming_hydrocarbons_worksheet.pdf
    • https://cdn.sqhk.co/jaxubefe/tyijcjh/guidelines_for_delirium.pdf
    • https://cdn.sqhk.co/jaxugaveg/OhcMcha/idle_landmark_tycoon_mod_apk_unlimited_money.pdf
    • http://santand-es.com/622281456303591p.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fibesezati/puzanilefokivadivef.pdf
    • https://uploads.strikinglycdn.com/files/8c407d0e-caff-4ffb-b660-cc51d83dfc9b/what_are_the_dimensions_on_a_55_inch_tv.pdf
    • https://s3.amazonaws.com/fezenur/mejusafubonabekijamo.pdf
    • https://uploads.strikinglycdn.com/files/cadc8d93-c787-4f52-89fd-69b7ea0d7da2/42907433116.pdf
    • https://s3.amazonaws.com/nuxulikiwab/livro_sobre_alimentao_saudvel_infantil.pdf
    • https://s3.amazonaws.com/zubata/esge_colonic_stent_guidelines.pdf
    • https://s3.amazonaws.com/faluzotixupi/aliexpress_dropship_for_woocommerce.pdf
    • https://s3.amazonaws.com/vuzufexarevima/electrochemistry_voltaic_cells_lab_20_answers.pdf
    • https://uploads.strikinglycdn.com/files/975b062c-32ef-48ab-acf9-3525bab23665/53848026377.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efa7.bin
9ab7be8def63b74cce40d6cb9c9814d6139699ca27366dbdb4bbde38a4e1176c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA7 5316 bytes
font_01_sfnt_off000101ab.bin
c14f1b58bd143c4dc98b1d2dda02d58139324b6a76e56da440b5dedd0b258351
pdf-font-stream PDF embedded font (sfnt) at offset 0x101AB 10304 bytes