Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9b2bee65ccf83af…

MALICIOUS

PDF

81.3 KB Created: 2021-03-21 06:05:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 12d1a8237585343dabe3627613e05a84 SHA-1: 56d8d541d6525e9da79d726a5ae3c5da85cb5634 SHA-256: a9b2bee65ccf83afda7c510a62359add770fff732746f23b3ef7206fc060c317
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The document body, though heavily obfuscated, contains keywords related to drug testing, suggesting a lure to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://xezojetit.ru/wix?keyword=dimethocaine+drug+test PDF link annotation
    • http://volalagokiva.sportsontheweb.net/blagues_de_tonton.pdfIn PDF document text
    • http://wupemokabate.scienceontheweb.net/80074680587.pdfIn PDF document text
    • http://fofolep.mywebcommunity.org/venikovixupugonovorulema.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/33a26568-2bf2-4477-b173-4b4dccf0e9f9/96821145304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/656d81f4-6779-4ef7-be86-54cf9f76cdcf/31836745922.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c77a4b40-a39e-4978-8515-e58c9f0e9fed/61336916322.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bf9d342-a515-4eeb-93f5-8b95046f223f/64135070987.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e90ab6d-4742-43eb-9aca-5311b25676a8/how_to_legally_marry_a_couple_in_indiana.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/binary_octal_hexadecimal_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/57259780131.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/fuviradalapuvuvoneres.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/58170291977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5fcd3b1-a73b-44ab-b2d3-c1bb5a7f83f0/how_many_electrons_are_there_in_the_outermost_shell_of_alkali_metals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d55c0e3-7865-4a93-9539-52fee054df38/mokelelemitejozudigixuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aea35ad-1ee7-4c7e-9fcb-6fff065c021d/tanabazokok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/608b5366-7b51-4131-af49-400a99729372/synonym_worksheet_for_3rd_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad418d91-558f-4ad7-83a5-c7ae91e18484/is_harry_potter_and_the_cursed_child_a_book_or_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23ee42d6-5fc0-49e5-9dbb-25837a618bf4/minigoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26bd5b59-3a0e-49e4-b557-36f2d6a115a2/vegotawisibokefolitof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c06c88c9-b071-4a75-bb4c-287c68c7afb1/zuzepijofepojelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bb001b4-baea-4113-a274-958660eee659/vojexeduvobuvok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96286ec2-0934-4170-818b-99f6fd0a6de9/how_to_connect_a_speaker_to_pc.pdfIn PDF document text
    • http://nufiwimuzobo.onlinewebshop.net/aquelarre_mega.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_off0001009b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1009B 5320 bytes
SHA-256: 6a9c84ec1c4581da90230eef5b03ccc95d5006e9181d4fd87375058c8c71d4fb
font_01_sfnt_off00011288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11288 10968 bytes
SHA-256: b71093b2a2645cfd40210a05cbff7452d0e1ae222bd0f9e80a11030859d0d4d5

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