Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f0db5c500512d23…

MALICIOUS

PDF

67.9 KB Created: 2020-12-17 21:47:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 114768cd858427e78d7ddb74fb52dad9 SHA-1: e4fc5cd81d23d3ceffcbabed6ae3fb6ac1cd8c90 SHA-256: 5f0db5c500512d2364869bf7674ce896b0e2cb3bbb33b09289924318f87f867a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/123?utm_term=dishonored+2+coin+guide In PDF document text
    • https://mudagetani.weebly.com/uploads/1/3/4/3/134381332/nomalijivaxexosuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f8b75d4ee53f.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/9a798bb1-ced3-498f-97ba-889da32b077b/ge_monogram_wine_refrigerator_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a3195e8e827d4299026a/t/5fc4e664173fb5383b3d6215/1606739557811/live_load_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e04a9ea-a26e-4d06-b541-c5569fafad59/quinny_speedi_sx_ersatzteile.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc578f6405d5340f3488c89/t/5fd731c772b1137fa9902585/1607938504007/podamalaf.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc302ce16f6d44b07cc72db/t/5fc533511972c46e3c463977/1606759250449/10439537468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b924cab4-52ed-4b3c-b562-a20f4604ed06/vinayagar_agaval_mp3_song_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8ecca2e-fccb-41f6-bfc9-5b2c2cc3777b/55108548975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec16dd4-f911-422b-beb7-b37dc0fa8485/blackbird_beatles_guitar_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ef92a65-5bd4-46bb-ba23-e1e2a39cd20e/mubagisosawutib.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_off0000ce85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE85 5088 bytes
SHA-256: ba70828b22bbd1e074db7aedc3e2f714badb2499d3211d07758795b7df0869a1
font_01_sfnt_off0000dfd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD6 10280 bytes
SHA-256: b090a1a260c0bc0ba20faaece2b15c3d82fef250069621e45ba6dfa42f70d1e2

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