Malicious PDF — malware analysis report

Static analysis result for SHA-256 975b1b5816796048…

MALICIOUS

PDF

83.0 KB Created: 2021-03-26 00:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5aa04ab278b817f9a5d243fdf6194f25 SHA-1: f83a4b20006ac24e4105a83f8ceac341e29c7022 SHA-256: 975b1b581679604851b1953c3046d000f1b9cfd1be66962986f93126b53c7516
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit user interaction via a malicious link.

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://nipisod.ru/123?utm_term=angularjs+set+form+dirty+from+directive PDF link annotation
    • http://mowefopovog.mywebcommunity.org/annexure_4a_form.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzaxepigi/agidfEj/45523597188.pdfIn PDF document text
    • http://gekenig.mywebcommunity.org/anabasis_de_alejandro.pdfIn PDF document text
    • http://fekosuse.getenjoyment.net/90342755855.pdfIn PDF document text
    • https://cdn.sqhk.co/wugeguxu/XghjfjB/44822851733.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490140/normal_60515f0655fd5.pdfIn PDF document text
    • http://mixezitubut.mygamesonline.org/46268806455.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409393/normal_5ff6193ae74d9.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/ditiruz/baaghi_1990_full_movie_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/36538412377.pdfIn PDF document text
    • http://fomobiwudaz.rf.gd/laurel_wreath_leaf_template.pdfIn PDF document text
    • https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_3ff6b2dab6a54fe583fb057f8c7c65b3.pdf?index=trueIn PDF document text
    • http://penibotozatugi.epizy.com/merriam_webster_visual_dictionary_download.pdfIn PDF document text
    • http://nokejufesuw.atwebpages.com/wogazivexag.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/spesifikasi_headset_bluetooth_lg_hbs_900.pdfIn PDF document text
    • http://wepinipinalojud.epizy.com/97231632667.pdfIn PDF document text
    • http://sirovorisolilu.rf.gd/53505148637.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/gudanek.pdfIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_7321d55aa7504c928fe23bc6c05e9c2f.pdf?index=trueIn 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_off000107ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107EE 5568 bytes
SHA-256: 98c83637d9c912c4dc89a2415b76670ff3f80d1d451ee7380a6d1f2c4517788a
font_01_sfnt_off00011ae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE6 10700 bytes
SHA-256: 2bd37767f9efe61a6bfdd367a7b3d3a3b6243975dab2675015b34849534682ec

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