Malicious PDF — malware analysis report

Static analysis result for SHA-256 dca73c312bbc29d4…

MALICIOUS

PDF

72.5 KB Created: 2021-03-06 22:35:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b3ad7e689b46986c38420c6e3ee9fc7 SHA-1: 2b25b9719a0fd1604fb5106dff7461e724d56376 SHA-256: dca73c312bbc29d453d4a355b282d63e7fabd2249961897e1eb4e3093b2bda2f
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'xezojetit.ru', which is likely used to host a malicious payload or redirect to a phishing site. The presence of multiple embedded URLs further supports the phishing or malware distribution intent.

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://xezojetit.ru/123?utm_term=it+should+be+fine+synonym
    • http://montana-media.com/child_care_services_employment_verification_formrf8w1.pdf
    • http://reduslim-europa.site/gobefevamopenijujors0z.pdf
    • https://cdn-cms.f-static.net/uploads/4499979/normal_6010387994c4b.pdf
    • http://consequences.space/rekomalejevokarapim5u8ll.pdf
    • https://cdn-cms.f-static.net/uploads/4393752/normal_603e8de81569b.pdf
    • http://beliyden.xyz/stephen_king_book_list_in_order7mecc.pdf
    • http://merogerofame.66ghz.com/alaska_waterfowl_guide_license.pdf
    • https://cdn-cms.f-static.net/uploads/4381083/normal_602514b451009.pdf
    • http://pubggaming.online/bigutufixowetejadu8wnof.pdf
    • http://qlemelest.online/how_to_draw_cool_things_easy_step_by_stepbnjuh.pdf
    • http://freehookup.xyz/craftsman_weedwacker_17_25cc_gas_line_trimmer_partsiqhxq.pdf
    • http://vnatural.space/behold_a_pale_horse_download989i6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://danudur.epizy.com/ladixosef.pdf
    • https://uploads.strikinglycdn.com/files/7f3fb424-5cc4-4ad2-a23c-c29bc86ba6a2/python_download_for_windows_7_32_bit_softonic.pdf
    • http://dujawupiraxep.rf.gd/bigo_live_free_call_for_pc.pdf
    • http://godidab.epizy.com/infectious_colitis_treatment_guidelines.pdf
    • https://uploads.strikinglycdn.com/files/a1130ce1-ac8a-4fa7-90da-50d48e633292/mudedajoxoxavenaxat.pdf
    • https://uploads.strikinglycdn.com/files/1c0bde7b-9522-4abc-9981-535db37fdeef/lenepepegibatumumepipadit.pdf
    • https://uploads.strikinglycdn.com/files/92947086-2797-4963-8b19-56dd59562306/bodilov.pdf
    • https://uploads.strikinglycdn.com/files/cce9a9c6-1ee8-4dca-b666-9751fd46f9ce/solving_trig_identities_examples.pdf
    • https://uploads.strikinglycdn.com/files/5c78fc15-2330-43f4-805d-86fb7a2de9a7/what_is_cutover_activities_in_sap_sd.pdf
    • http://tigaxulajaju.epizy.com/books_free_sites.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfb3.bin
889a45c644d051d7754fe3976e404564bf3d14ad4a01d7e8bcff4be4bbf16542		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB3 5020 bytes
font_01_sfnt_off0000f0ab.bin
fd74d958f68010abc7545cdabc923e3497861aa7b6cb6917f33c77cd2f3d48bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AB 10324 bytes

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