Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c37625a7f52c7f…

MALICIOUS

PDF

76.9 KB Created: 2021-03-12 09:22:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 127de2b6dedcb669705b34e237f7cce9 SHA-1: 6cb2b3542734e76534da070e4c47a2f43d2201dd SHA-256: 93c37625a7f52c7f3471df6b0eac2593dc74067a38ab10a6585d0705dba0529b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a URL that appears to be a phishing lure related to interview questions. The presence of multiple suspicious URLs further supports the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://midufefew.ru/wix?keyword=pe+assistant+interview+questions PDF link annotation
    • https://cdn.sqhk.co/pinofizulag/c8hiHhh/tin_nh_n_sms_brandname_la_gi.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/8ghSjbS/zezari.pdfIn PDF document text
    • http://devuweza.scienceontheweb.net/sotopetalafatenixik.pdfIn PDF document text
    • https://cdn.sqhk.co/dolafita/icijgin/58304684955.pdfIn PDF document text
    • https://cdn.sqhk.co/zaxuloxedu/91lgdCN/76753991755.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/ballade_in_g_minor.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/gfUgfgb/battlevoid_first_contact_hacked_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nimuxugemu/5LjjXZz/bised.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/JihH63R/stickers_de_amor_para_mi_esposa.pdfIn PDF document text
    • http://timinome.getenjoyment.net/64275302255.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/gohgiih/download_bubble_shooter_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kurafuso/jjw2bi5/nodega.pdfIn PDF document text
    • https://cdn.sqhk.co/xeloxilava/hib1ehi/puxulut.pdfIn PDF document text
    • https://cdn.sqhk.co/bepifopid/zKZjggX/galaxy_empire_game.pdfIn PDF document text
    • http://xorimomupajo.scienceontheweb.net/2373852189.pdfIn PDF document text
    • http://minesaxofunawi.getenjoyment.net/20933768351.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/75ee391a-15fd-44fb-aa2f-e768a7821c7b/does_shred_stack_really_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95617ef0-e8b6-4866-9a39-bfc00a99e207/uscg_medical_certificate_expiration.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49cd9b39-650d-493d-a439-0a06b8d2152d/42956334364.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3a50d15-3ae1-4385-8972-478d02b5d742/lemomepirovav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8709764b-8a22-4f03-9751-cae6a45c5ec5/distinguish_between_n_type_and_p_type_semiconductor_on_the_basis_of_energy_band_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dba9925a-5b06-424b-b1cb-592b7e01b46d/evangelio_de_tomas_completo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/378f710d-5ce9-4263-adc0-de92f19f5c4e/88091708841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a696f9a3-fd86-4cc0-9676-d7ab13aa33fb/83824947574.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94bbf5c9-3e11-4afc-85d3-2d5c5ccdc888/suxoru.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_off0000f1fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FE 4928 bytes
SHA-256: e381ba0a9705ab111e61bcbb5dea9433884c594ce14a561c08306a820608b83b
font_01_sfnt_off000102e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E4 10360 bytes
SHA-256: b48f7c5d2c5ccd5cf8b1c735d91fa71b6cb232a200eba8232740af7e48fb3921

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