Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8dafcc8b498c000…

MALICIOUS

PDF

69.3 KB Created: 2020-11-10 20:06:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 089cafb575026378a5eaf9d0c94ebd76 SHA-1: 96eea72c2096ab7dc00a97262742e7ef7cd07a06 SHA-256: f8dafcc8b498c0009001d595b908a215277655101d8758064a4e1692a9e688a9
96 Risk Score

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 0.9995

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://traffset.ru/strik?keyword=song+lyrics+for+jesus+is+the+answer PDF link annotation
    • https://nedugapepo.weebly.com/uploads/1/3/4/2/134265444/zogakurejafobujoz.pdfIn PDF document text
    • https://pekedilude.weebly.com/uploads/1/3/4/3/134324883/suxukizobezitip_kasedu_zirabosixoweb_xarabukebimujag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f87549f37854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376120/normal_5f9f73c8108dd.pdfIn PDF document text
    • https://lusefova.weebly.com/uploads/1/3/4/5/134583673/3b125a44848bb3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417815/normal_5f9947bfdbf17.pdfIn PDF document text
    • https://sovuzozasofebod.weebly.com/uploads/1/3/4/3/134343281/3477401.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/memul/tojixedunurajilekan.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/compound_interest_worksheet_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df1be7e1-fc8b-4cd2-9274-04fc624e6402/7405552885.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC370 5400 bytes
SHA-256: 805b801d096ecf337f32d16aa961211fd4a0f02a768f1122daa2e523faedf07d
font_01_sfnt_off0000d5d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D6 10832 bytes
SHA-256: a12eb5ef3566bf8049e70a072a19e45da8f3e2a93809fddf6d8b6e1053bf61db
font_02_sfnt_off0000fa75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA75 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3