Malicious PDF — malware analysis report

Static analysis result for SHA-256 17b72296a34e2b3c…

MALICIOUS

PDF

75.3 KB Created: 2021-06-03 10:25:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bbd80e490749100fe0e4fe7a4e1e91c9 SHA-1: dc09cbe366ddcd43cf1d19c99df485489c1cf118 SHA-256: 17b72296a34e2b3c76c7b1adc7cc7c457a33ddc0ec41b052d546ed69376a00b2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://krisoc.ru/pbw?utm_term=how+to+win+a+coin+machine PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379613/normal_604067e154748.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414172/normal_605bff0e49d2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371508/normal_60163af508dff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403954/normal_5ffa7989475e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464732/normal_5fe6e19cd5853.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467004/normal_5fc64872728bd.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/db44dbe9-bb27-47df-bc46-a79ed81ca8bc/full_hd_movie_2020_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1b03fec-4be5-4efe-b4da-fdcfd3317472/tupaparetojamuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bcb04cc-8d20-4e23-97c1-ca7fc5d89286/trigonometry_revision_booklet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/964a43c9-643d-4279-84b0-6140670a3f30/ganododib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67e95462-6edb-4dcf-85d5-17d789c90cec/74028253908.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d90e91f9-ac79-4399-81df-48ecbf733d0f/31413751831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d76bd15c-660a-4c3b-a2b1-65c7c2e185d5/kubineko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18f91b10-6349-4a4d-809b-58e61cc80594/how_to_make_residual_income_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeeb88fa-8408-42aa-8b55-0d95d0cd910c/novakegi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f3ce9c5-4637-4ec5-9664-6ea13ad573e1/confidence_gtr_treadmill_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/809cd213-7ac3-4a30-8c92-5097c94318f5/68389556543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bb446b7-2064-446b-a570-122fab0c6278/al_quran_recitation_with_bangla_translation_mp3_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d898cec8-cc47-4e9d-98f1-8825b53977a0/nufetoxugenozibenukeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fb9e5d0-0f40-42de-8dee-12b381cc2444/how_to_calculate_the_total_manufacturing_overhead_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8628a7fb-0519-4bed-8905-c72b1e64a623/45898616662.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_off0000eaad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAD 4784 bytes
SHA-256: 5468e95f1a93ccc9059a96f7e85de914b031ebcc26cfd616886945f4af5fbbf6
font_01_sfnt_off0000fadf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADF 10872 bytes
SHA-256: 5990d08e18e3d234137f1883a3bc0b5188b0cd1ffa7b9780b1fec88b46110ed4

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