Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dca47d103fecd66…

MALICIOUS

PDF

63.8 KB Created: 2020-12-19 08:23:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2190528c8c951fdf2bc2ba650e48fe84 SHA-1: 1e03320406867da5ab04476da31201200c20a7fa SHA-256: 7dca47d103fecd6649bb19e50eb491f7b7c7276209477a2366f87723ff0fe4d5
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URL pointing to 'https://trafftec.ru/123?utm_term=printable+bolt+circle+template', which is likely part of a phishing or malware distribution scheme. The presence of a heuristic indicating a visual download button further supports the phishing lure attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafftec.ru/123?utm_term=printable+bolt+circle+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378153/normal_5fb8a017716b1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/ccna_portable_command_guide_4th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fcd71ae-e6dc-4aa3-8d48-7e090ddcfe12/google_drive_spider_man_into_the_spider_verse_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/46243335152.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/jazusenemumekevikawuw.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/wuvegez.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/13870306682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/347688f7-8347-4018-8b51-e1c323384648/texas_am_commerce_intramurals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bb1b3a4-22ff-40f7-aa6e-a02657c61a11/68149910291.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7a94bca-7c10-4623-a750-13400a044640/epic_emr_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a328b4e-f910-4a0f-80fb-99aa7b9b501f/hide_a_key_box.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/unit_10_biology_benchmark_test_review_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcb8926e-5720-4b56-b4ea-111df6c5a507/nebov.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000afbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFBD 4828 bytes
SHA-256: 2356e1c46da510d1358e0ac32ffb68efdf48e4e53f943ae51e7b7e39be792c5d
font_01_sfnt_off0000bff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF8 10796 bytes
SHA-256: afb34b29a57f347645e434d05bb8f8c9a475ae4751a23c9fabc5e116652418ee
font_02_sfnt_off0000e486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE486 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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