Malicious PDF — malware analysis report

Static analysis result for SHA-256 8823bd87793d4a25…

MALICIOUS

PDF

76.9 KB Created: 2021-04-03 18:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 69b4495cb3bbf6c460e3749560ff2cf0 SHA-1: 460aa872c23a1057b260f0a201f50050cda90dbd SHA-256: 8823bd87793d4a255ad2be4f008b68404a5651a2525ffdd5de8744dbd805306a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains text related to 'Dlookup function in access report', likely a lure to encourage 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://pelibifir.ru/123?utm_term=dlookup+function+in+access+report PDF link annotation
    • http://tiriruno.sportsontheweb.net/berliner_platz_4_lsungen.pdfIn PDF document text
    • https://cdn.sqhk.co/dubutemaruxu/jahcqgg/xawemolavovewuj.pdfIn PDF document text
    • http://raxawevamavox.getenjoyment.net/5261479934.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/62662157076.pdfIn PDF document text
    • https://cdn.sqhk.co/dulunukosep/ehbjgif/netflix_android_app_system_requirements.pdfIn PDF document text
    • https://cdn.sqhk.co/tekuligote/ghjjgcw/18857159380.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/firigugixujotov/kejowumurabugoz.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/67849581731.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6763ecc-027b-45ad-9948-eacd96ce2eac/the_bloody_chamber_en_franais.pdfIn PDF document text
    • http://fokibuzevurir.rf.gd/kesus.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/ft_857_cat_display.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cce4c61-bf15-46ba-b674-1af6c2e295af/ninja_blender_food_processor_attachment.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/74914720489.pdfIn PDF document text
    • http://jokubamobivavum.onlinewebshop.net/basis_definition_in_solid_state_physics.pdfIn PDF document text
    • http://dutagewenurodub.epizy.com/domumefagubolitagirid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eab1a7a9-bbb1-4ba4-a053-8a7089aad155/dosisisodobuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/80615235496.pdfIn PDF document text
    • http://valupakukav.myartsonline.com/14284459449.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/27980034424.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc3bf49a-36ee-4d36-943a-f3ec71ebfc18/zurisonabubediwibagur.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/tafesekifu.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAE 5072 bytes
SHA-256: 02c471e79a4ac59e12ac31871334460357dfc07266eef540de0b2a2638bc33c7
font_01_sfnt_off00010009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10009 11244 bytes
SHA-256: 5e1e7139f1ef03ef17f459a4d909004fe326a65f761d7a64e4093172f5e8bb20

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