Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fc019ac83ce90c6…

MALICIOUS

PDF

83.9 KB Created: 2021-06-06 20:31:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42046e5314ecf1f4530259b7f716f0e9 SHA-1: d34d893b5beced19d7e600735f292759909418bd SHA-256: 4fc019ac83ce90c60e6c234d565a93b03edd7b33ebfe3685f02941334bac432d
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick users into downloading malware or visiting a phishing site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed as a lure, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://inwebjor.ru/pbw?utm_term=tenggelamnya+kapal+van+der+wijck+full+movie+malay+sub+download
    • https://memekofonaw.weebly.com/uploads/1/3/6/0/136054412/52fa8a7ed1.pdf
    • https://cdn-cms.f-static.net/uploads/4418993/normal_60692bd75aa13.pdf
    • https://cdn-cms.f-static.net/uploads/4469631/normal_605f43e7a4fb2.pdf
    • https://cdn-cms.f-static.net/uploads/4408858/normal_602c46e627057.pdf
    • https://nomukemometikuf.weebly.com/uploads/1/3/1/4/131483138/733707.pdf
    • https://kopomitesukov.weebly.com/uploads/1/3/1/4/131453216/titutedibapuge-jiwojodenixilem.pdf
    • https://cdn-cms.f-static.net/uploads/4404520/normal_602eab7e89e79.pdf
    • https://dumuwikodopod.weebly.com/uploads/1/3/4/4/134458554/dipupiteji.pdf
    • https://fokididekorup.weebly.com/uploads/1/3/0/7/130775810/jozum-nuzubevis.pdf
    • https://sawuvuvexefiz.weebly.com/uploads/1/3/5/9/135964560/67f40e.pdf
    • https://xiligori.weebly.com/uploads/1/3/1/4/131411896/kaxatepimevavi.pdf
    • https://static.s123-cdn-static.com/uploads/4370089/normal_6002b5c1967c8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://goxuluk.pbworks.com/f/subtitle_search_android_app.pdf
    • http://gifavipa.pbworks.com/f/69381669385.pdf
    • http://vawaguzidatu.pbworks.com/w/file/fetch/144591477/rulisir.pdf
    • https://uploads.strikinglycdn.com/files/da845398-0bbf-460e-88eb-03f3b22c5958/rivudilubonuva.pdf
    • http://kirozatijawu.pbworks.com/w/file/fetch/144508932/microsoft_visual_foxpro_9.0_descargar_gratis.pdf
    • https://uploads.strikinglycdn.com/files/89a866c1-957e-4204-b97a-62fee3e72828/99641758255.pdf
    • http://nolumemonip.pbworks.com/f/apfelgarten_de_pere_wisconsin.pdf
    • https://uploads.strikinglycdn.com/files/5b3b8995-6428-401d-bd6a-c0eb8b319fa9/73328757989.pdf
    • http://lexibitite.pbworks.com/w/file/fetch/144535830/how_to_read_ultrasound_report_of_pregnant_lady.pdf
    • http://sagidetubi.pbworks.com/f/10642593411.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd10.bin
7a2c32e1d14049193de8cd9572193eef17c7af68b97ea52ae555d771aae92520		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD10 5760 bytes
font_01_sfnt_off000110a4.bin
9500189f731e64d8015fce3f3ff15d9b6f38d7bc4b5e43d833232887acdff290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110A4 10232 bytes
font_02_sfnt_off0001338c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1338C 4324 bytes

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