Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7814b97a10b51a…

MALICIOUS

PDF

72.6 KB Created: 2021-01-06 11:11:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bcb8ac8236d509dcc64fcbb7429f8986 SHA-1: 2b254c21430f2985aa0d85f2173de761e8a06105 SHA-256: 2f7814b97a10b51a2329a50f6a2c869550772c268ed5cf138bc4d25c6454cb8d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that impersonates a patient portal lab report, likely to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/aws?utm_term=aiims+patient+portal+lab+report PDF link annotation
    • https://cdn.sqhk.co/mujexoxa/gjhgGDA/kokilibuzifamev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/dugenodepuzim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9593c2c1-cb28-43ee-9021-e6ad15ea2161/45913832301.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/video_editor_gratis_terbaik.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/kopedujonosolo.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/fortnite_storm_racers_challenge_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9148ab1-2526-4015-b482-2116621295bf/mathematical_interest_theory_vaaler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42b73f3f-61d4-49dd-8e7a-f606d9065720/19306347125.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/carton_mousse_format_a0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcb6c6c0-b35d-47e7-9067-d052a2fdd4ee/wubaberakosotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/479a2fc0-abc5-41e7-bf0b-815e7c0c8bd3/tangerine_edward_bloor_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/omkreds_af_trekant_formel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adaa26bf-7693-4b35-b47e-f87aa32263e6/manual_hydraulic_wood_splitter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a6d64f0-d496-455d-8991-c406a44d6a96/paris_character_traits_with_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84119e1c-7357-4522-b4f9-6849fa64bb4d/gefimo.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_off0000dfd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD6 5092 bytes
SHA-256: 617aedf50c4b7851f07800fdb049c245784651153f439b3b6804175a0c6adaf1
font_01_sfnt_off0000f106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF106 10528 bytes
SHA-256: d7d055722a7a73518689d1ee156fe709fd1856cdf6dedeb4b897dfd8ff107dc5

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