Malicious PDF — malware analysis report

Static analysis result for SHA-256 dedfd8f88773ec4f…

MALICIOUS

PDF

77.1 KB Created: 2021-06-08 06:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b2c29aaa0cd79fe9e6144c745dca7f36 SHA-1: d084c1d9680051cf7b4d1f043a9e0e9082f5a8ab SHA-256: dedfd8f88773ec4fad6eecba2d435cceef273b4d3f3fb87c139957c48881fdf5
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, specifically as a phishing trojan. It contains an embedded URL, https://wastran.ru/pbw?utm_term=wow+classic+paladin+leveling+spec+reddit, which is the primary indicator of a phishing or malicious redirection attempt. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://wastran.ru/pbw?utm_term=wow+classic+paladin+leveling+spec+reddit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463298/normal_5ff4ef6e41c60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502178/normal_602b2a46a2848.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378393/normal_60bd546db10da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451929/normal_60055fbba280b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463272/normal_6005fdccb3909.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/6b22c8d6-30e9-4653-a433-4637111fdccf/augustine_of_hippo_on_time.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b78fedce-a21e-4d8b-b4b3-bc10b66f8f24/jimim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2278efbe-63bc-4336-ae0f-6b7281cb3b83/belkin_ac750_troubleshooting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01ca01a3-9f61-4471-b92e-74b6226a169b/64233089423.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e8a70c3-523a-4884-9333-22dd536a11d4/24704178137.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f87411a6-aab3-4672-88fe-37a5656ae25e/how_to_breathe_when_working_out.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ab5610e-cc93-4464-9d4c-c09e00f40fc5/56471610265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3c94e0f-6b2d-46a7-8098-dc1e940bf421/1922177148.pdfIn PDF document text
    • http://bawamotijeku.pbworks.com/w/file/fetch/144451692/botowifuledepafolifikaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70c9627b-e829-4f38-abc0-a5baac2b17fe/38550800932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0612111f-ced0-4e83-b314-76bd0c5d04dd/what_do_first_aid_officers_do.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31180ec7-28a6-4635-82fa-6a2a561483ce/76122408206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a2d9ede-9450-4938-beeb-370e5c2704b8/orion_tv_codes_for_universal_remote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ae6c21d-8b30-4653-a42c-39453a778265/quais_so_os_tipos_de_mercantilismo.pdfIn PDF document text
    • http://zogekinovag.pbworks.com/w/file/fetch/144744441/gabitadagitediruneguzobim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/021f0bff-ecfe-47cf-9459-536b65ac4d53/how_to_compare_continuous_and_categorical_data.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49ea8473-1a93-4315-a052-1d7322039341/55190062063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2658d364-d6bf-4860-9c24-07605518c4e3/zemux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f58f861d-314b-42a1-9cb4-682ce266635d/la_iliada_personajes_griegos_y_troyanos.pdfIn PDF document text
    • http://rujuboxu.pbworks.com/f/60724864041.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_off0000ecd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD1 5408 bytes
SHA-256: 70392cda6dbaac2888a8fff74ad779adf33ef0fe4fe43cfd1e9046282e2bc21f
font_01_sfnt_off0000ff63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF63 11588 bytes
SHA-256: 0caa84f15bd558022f26ab0f8a8f865529e636ccf12002fe37fc45ffc239781c