Malicious PDF — malware analysis report

Static analysis result for SHA-256 560ed82c40280a60…

MALICIOUS

PDF

72.7 KB Created: 2020-12-22 17:01:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 74f3ef6f58f1c57fa2e5fe6a597817d0 SHA-1: d94d3cd98ae1f19b74c09aec56651d338fd05b18 SHA-256: 560ed82c40280a604a14ffa4fd88daabf236012793e4a393c1ad03c37602b19b
96 Risk Score

Malware Insights

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

This PDF document, identified as malicious by ClamAV and an ML classifier, contains an embedded URL pointing to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to sheet music, likely intended to trick users into visiting the malicious URL. The presence of multiple embedded URLs and the overall detection by security tools indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/aws?utm_term=satie+je+te+veux+sheet+music PDF link annotation
    • https://jebezefekoju.weebly.com/uploads/1/3/4/7/134737834/zanukojij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491687/normal_5fb2df6547cb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f9a5d36dee95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457305/normal_5fa6a4f2bf054.pdfIn PDF document text
    • https://nudegono.weebly.com/uploads/1/3/4/6/134682657/sedevuwolakezenipoji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448718/normal_5fbdd92179d70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462362/normal_5fd3dbfe9fe29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403140/normal_5f9616d39d656.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/fiwamutibu.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/frame_relay_congestion_control.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/xuzitujivak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f9f6d7-492e-4b44-a831-420e76bd840c/87584259740.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08aaa0b1-0b2d-441a-8e64-03d861a276f7/80518424714.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000cb91.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xCB91 12180 bytes
SHA-256: 645358abd9c740b1fbe8999905d2f52d34969142eda09daf1b43da340b64b039
font_00_sfnt_off0000b9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9EE 5220 bytes
SHA-256: d332e8b80cd7256d9a09d4aa3c56ca214710bd5b31fb6de8c4de560857e8d987
font_02_sfnt_off0000ee04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE04 12168 bytes
SHA-256: bae142743149907df308324d72ec3f463017b8e778086320269190bfbae6920d

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