Malicious PDF — malware analysis report

Static analysis result for SHA-256 6020a679ac8e63b5…

MALICIOUS

PDF

81.8 KB Created: 2021-04-07 15:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 731e0165f9b9ea226e4a9175a2cb5da1 SHA-1: 21924120940ee370a877e0bff32bff3cf5013d78 SHA-256: 6020a679ac8e63b501ebbfd01b2b6a587575b6bb2659496301bd35121e67a1d8
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to scientific models, which is likely a pretext to encourage clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/wix?keyword=list+possible+limitations+to+scientific+models
    • http://ourfanz.com/2015_esc_guidelines_pulmonary_hypertensionxilxu.pdf
    • http://reetodo.online/how_to_make_someone_fall_in_love_with_you_book12rqy.pdf
    • https://cdn.sqhk.co/gapebeve/2kheihR/vijoxufurazirubikedekekew.pdf
    • https://cdn.sqhk.co/dujuxafetot/uhageha/feudalism_in_japan_definition.pdf
    • http://zathkatow.xyz/53120134742vld2.pdf
    • http://leaninrzpd.site/49232049573hdffe.pdf
    • http://islemleriniz.org/rarosidunuxugus5optt.pdf
    • http://spiritstudio.ru/vonibubopatojesvexb6.pdf
    • http://goxopisejeza.22web.org/97120250901.pdf
    • http://drnextact.xyz/458057445635v0nn.pdf
    • http://olymptrade.buzz/celtic_frost_prototypebc9f4.pdf
    • https://cdn.sqhk.co/puxolika/Y0gdB0h/4_pics_1_word_level_2245_answer.pdf
    • https://cdn.sqhk.co/vupapevixu/dhdijgf/vitamin_d_deficiency_treatment_guidelines_2018.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kasuwevovog/c_compiler_for_windows_xp.pdf
    • https://s3.amazonaws.com/zumomasugipeno/2012_toyota_highlander_oil_change_reset.pdf
    • https://uploads.strikinglycdn.com/files/aa9e4b09-ac8e-431e-a5ef-fcfba6d84010/community_health_centers_of_pinellas_clearwater_florida.pdf
    • http://xujiwusa.epizy.com/koverixisoxitafosenex.pdf
    • https://s3.amazonaws.com/tezofuretejom/72032099219.pdf
    • https://uploads.strikinglycdn.com/files/0a99231c-7ff9-46f8-b337-9585d38cbfe1/9688495436.pdf
    • https://uploads.strikinglycdn.com/files/2a8a8c9c-8376-405c-969c-ef2d3ece0e5c/vogisuguxu.pdf
    • https://uploads.strikinglycdn.com/files/10ac6265-a57d-4fbd-8477-4d828b976d50/77034219360.pdf
    • http://kodireso.epizy.com/characterization_of_silver_nanoparticles_by_uv_vis_spectroscopy.pdf
    • https://uploads.strikinglycdn.com/files/8db62103-4104-49c0-8d0a-7f02a7637b8e/howard_gardner_theory_of_multiple_intelligences_test.pdf
    • https://s3.amazonaws.com/bokofapig/baaghi_full_movie_mp4_hd.pdf
    • https://s3.amazonaws.com/xasovewipeje/4liker_old_version_apkpure.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f507.bin
ff08f516071bbe3f3e35e93fe8e00bef01244ecb75ae48cc0f62b0f7c84a1bd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF507 5284 bytes
font_01_sfnt_off000106e6.bin
7420db9ec41012b263dff8e0d039d2a895961a6b4c1647eabbcd20f441fad98a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106E6 1936 bytes
font_02_sfnt_off0001102d.bin
72d91715d47344ccc1089d4f7af17eecb64f08093fb27d43f36dd2d2f9bc136a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1102D 11476 bytes

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