Malicious PDF — malware analysis report

Static analysis result for SHA-256 e829a994560a6849…

MALICIOUS

PDF

267.6 KB Created: 2021-02-28 14:47:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 919f838ee5b27ee08218d4a71d55211b SHA-1: 473f13507de601330b7b28ad1531b2f7ccf30f9d SHA-256: e829a994560a68491cf36e153bf2650864db6e0285a954c6fcbce8eeedf7b2ac
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an external URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to "core assumptions of christianity" to entice users to click the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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://pelibifir.ru/123?utm_term=what+are+the+core+assumptions+of+christianity PDF link annotation
    • https://lamamamim.weebly.com/uploads/1/3/1/6/131606140/8255235.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_6028a47900030.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374189/normal_6002992907c58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_60231067aa77e.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/ijghiQf/mexican_word_of_the_day_today.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376600/normal_6008fca35f6b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428342/normal_600326eb5e0bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410441/normal_5fd37154f26ec.pdfIn PDF document text
    • https://laximazerafa.weebly.com/uploads/1/3/4/2/134235816/mivijunosibo.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/Wsih8cE/veronica_mars_marshmallow.pdfIn PDF document text
    • https://lavolobaned.weebly.com/uploads/1/3/0/7/130740571/gawifunazalivon-bebaminozowag.pdfIn PDF document text
    • http://biolinkus.me/how_to_fix_an_ipod_nano_that_wont_turn_onyzq9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420430/normal_5fe2030ea70b9.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/xozeb/duzubuwakonubukidajel.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/bpsc_2018_prelims_question_paper_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/sepotuxuputotagomavuboxif.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003abfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3ABFD 5164 bytes
SHA-256: 9dd90f552cfc0d5bdd05184ba83c8e253d4ee3ed9536a1e9449fb96a0cf212f4
font_01_sfnt_off0003be13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BE13 5336 bytes
SHA-256: 4101db0b70e69ca6eb9112a4eee2f978d4599ba9f31f4600cfa285cd4738d958
font_02_sfnt_off0003d025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D025 20656 bytes
SHA-256: d09502d34058180efc79d990e32b47d0ad26597db9f9589bdaaea96927f8f5ae
font_03_sfnt_off00040a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40A47 16076 bytes
SHA-256: 17dc25ffd8be9e1a817a2a629234721e3af5b7f595c0e59e7e7d47d96463b6cf

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