Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ce7db219a0d610…

MALICIOUS

PDF

79.3 KB Created: 2021-04-18 03:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 287e1a40f338e5c42c73dabd30a7aef1 SHA-1: eef808113060326eaa9bf64895f724dc4891d79a SHA-256: 08ce7db219a0d610ae5939a7ca3276618429b4f62b4600d7c1f31a3397e23d61
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to 'fokemale.ru', which is likely a malicious domain used to host or redirect to a secondary payload. The document body, though heavily obfuscated, references 'D-link dap-1522 manual pdf', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://fokemale.ru/strik?utm_term=d-link+dap-1522+manual+pdf
    • http://tafakiduwav.scienceontheweb.net/migivasamomas.pdf
    • http://ratixopawem.mypressonline.com/cancer_espinocelular.pdf
    • http://pugisapi.mypressonline.com/pasar_un_a_word_on_line_gratis.pdf
    • http://didazema.mypressonline.com/top_10_weight_loss_smoothie_recipes.pdf
    • http://momegitufog.22web.org/irrigation_pipe_fittings.pdf
    • http://dibiwarisogix.mygamesonline.org/desinfeccion_y_antisepsia.pdf
    • http://lixodamevurobar.mygamesonline.org/8th_grade_social_studies_vocabulary.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_90f8c6b333ea4f7887e3bdbdaa2a9370.pdf?index=true
    • http://dojorunubi.myartsonline.com/39235449366.pdf
    • http://zisukuvi.atwebpages.com/business_environment.pdf
    • https://s3.amazonaws.com/wixamupelinere/lojeteworisanifu.pdf
    • http://vizawenep.epizy.com/pajedilofulibajovanutuj.pdf
    • https://s3.amazonaws.com/tosevud/can_home_depot_employees_give_discounts.pdf
    • http://wevikokuzufos.epizy.com/banner_background_birthday.pdf
    • http://lazuletezofik.onlinewebshop.net/garmin_nvi_1490_update.pdf
    • https://34ec465e-51aa-4dba-9a8c-c05fcfb5ae84.filesusr.com/ugd/df15ee_90135cb6e0474dc29ee6b47800e526a4.pdf?index=true
    • https://s3.amazonaws.com/pidufozu/dermatitis_acneiforme_tratamiento.pdf
    • https://7f3dc8b3-869c-44c5-82eb-14ae88d57796.filesusr.com/ugd/dc4ca1_5cdaf982ce7646b58e2e9c313804b9f1.pdf?index=true
    • https://s3.amazonaws.com/wupixufekijax/2843395092.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e403.bin
a48be6b42a48dc9eb53d918f4d6113439e6fac3f217f8689c953ea3cbe7efd48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE403 5316 bytes
font_01_sfnt_off0000f626.bin
193b017ce55b8b775cce67f04123dc034628ee62e62274f56466f3f389305785		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF626 10740 bytes
font_02_sfnt_off00011a80.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A80 16204 bytes

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