Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1bf04b63d95f5f…

MALICIOUS

PDF

77.7 KB Created: 2021-03-16 01:26:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 7a169b9a95b3bda356d68360c0475d31 SHA-1: 4b92a1206dcf50e401b94dc8da999ed1c907753e SHA-256: 0c1bf04b63d95f5f455e22030bfc92e6a407303a12adb6161931f223a689d0d4
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'jumiwimov.ru', which is likely used to host a phishing page or a second-stage payload. The PDF structure itself does not contain executable scripts, but the presence of the malicious URI strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/123?utm_term=low+cable+chest+fly+form PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448539/normal_600c641969a5b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451556/normal_5fccf4f965b06.pdfIn PDF document text
    • http://sujimelowakolop.medianewsonline.com/69138787208.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488570/normal_60173252443c7.pdfIn PDF document text
    • http://sewatumafuta.medianewsonline.com/vejusix.pdfIn PDF document text
    • http://zuduwamani.mypressonline.com/all_both_neither_none_exercises.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/5e3a1cd9-055a-41b6-9bc0-1331bc52e4fd/84388408672.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ac4ddf0-75da-4a00-88af-0151d0f6756c/kamuvebeba.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/disable_cell_broadcast_messages_in_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9720c118-8003-4526-a9f1-55518ff6412c/51716298656.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19c98efb-dcbe-4f59-85ad-6229bf5d03aa/are_invicta_pro_diver_watches_any_good.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a9b96ba-edc7-45bc-a771-331b956b6c6d/29990115499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b92dc2ba-6a4e-4954-8473-d7dd8898b5e7/samsung_scx_3200_toner_chip_reset_software_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/golub_capital_bdc_inc_annual_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a28ecf99-22b9-4cf1-a8bf-3369ae3a447d/interrogative_pronouns_worksheet_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b2fde59-efcd-4a03-8743-294295ff621f/58651693787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d127cef3-b4cc-4821-b2cd-64a9b1911513/rovok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbc7a80c-a4cb-4f1a-a374-b9908ab42284/56274800426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40392c17-c98a-46e8-a095-ecb443a16032/list_of_1000_most_used_spanish_words.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d22e4a2a-96cd-4f6d-84ac-461d1e038fbc/everyman_play_summary_and_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/4774523911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6382663f-6255-45a8-8171-eea1e03c2b8f/72451144733.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68fc18b9-7b28-48ad-884b-3593c55af37d/rurupemexewapotogogisanux.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_off0000f0f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F1 5396 bytes
SHA-256: de148dfae70e7f549decb46ffdba574860bc23714439be2fb3d0709a6f512edd
font_01_sfnt_off0001033c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1033C 11228 bytes
SHA-256: 65a62b99672bd21dab89813961fb99d48e8ffee57efefe478bdc02ee90a65fa8

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