Malicious PDF — malware analysis report

Static analysis result for SHA-256 19a611c5a65e9d45…

MALICIOUS

PDF

75.3 KB Created: 2021-03-22 18:08:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c11342ab1438f899b6db75f14afc93e4 SHA-1: 1844a387080b42dc4dbfde12aae7420dcf70a115 SHA-256: 19a611c5a65e9d45dc485b22b8bc3d70f65b04967332cb983bd81e13790db8d6
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, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'https://xezojetit.ru/wix?keyword=software+engineering+resume+objective', which is likely the primary lure. The document body, though heavily obfuscated, suggests a resume objective context, aligning with a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=software+engineering+resume+objective PDF link annotation
    • https://cdn.sqhk.co/fuludasowipu/idcTJhe/balance_sheet_format_of_nidhi_company.pdfIn PDF document text
    • https://cdn.sqhk.co/repudodo/hezijB1/doomsday_tactical_rocky_mount_va.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/idjhhQO/41691728126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466676/normal_60331581d6861.pdfIn PDF document text
    • https://cdn.sqhk.co/lotazoza/Mghbn3u/95721271070.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389358/normal_5fd36a3244298.pdfIn PDF document text
    • https://cdn.sqhk.co/ramazunor/CRtgc1W/spectrobes_beyond_the_portals_walkthrough.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/f5c20ad1-85c1-4281-96bf-117350f54c86/grounded_theory_analysis_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25b7011b-f44c-452d-98ce-a40aa0c08dc0/toyota_tundra_radio_wiring_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/osprey_publishing_2021_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/23209804783.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19e25ee0-302e-4ff1-a099-fa797aecc545/cnn_latest_news_headlines_for_today.pdfIn PDF document text
    • https://f1cb2ec4-a82d-4768-8a06-5236a2db220e.filesusr.com/ugd/a2e20a_e6d8521c288645fba06a94646e33fa9d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f74726a2-dcab-4127-b70a-24fb7bba6a01/jijepiguzop.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/22869656694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f56d1efc-9b5c-48ab-80a8-50ac3a92cd40/55333415393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/600d14f9-fd44-44d4-b8e2-d3b4a7141f79/bright_line_eating_cookbook_reviews.pdfIn PDF document text
    • https://cb47f074-0476-4434-b381-5672a365cab8.filesusr.com/ugd/c46c8a_dc40f11a903647d7abb934a351b87613.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/galimifoketusik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1767c12f-d358-4848-8df8-9c4dfc705288/25536054503.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_off0000e90a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90A 5640 bytes
SHA-256: c96f2bd50cfb1dd872d8c126dea2f2bb6aabef9e278116113c44d8e35a1c963d
font_01_sfnt_off0000fc4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4B 10556 bytes
SHA-256: 3e03ddf48c4d03a4b01b52594fa9960de9f90cc8fbd2caab68b1ef7c2c056672

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