Malicious PDF — malware analysis report

Static analysis result for SHA-256 8584aa3bccce9c74…

MALICIOUS

PDF

77.0 KB Created: 2020-11-11 14:57:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8b4477075eee9a5788e1b999d8a10002 SHA-1: 98fdae2a39e1934648b560d0e7c3c4a1e33d81ba SHA-256: 8584aa3bccce9c742de21c37ce17dfc934d2db3ae3a8a320d982bb86052c2567
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 0.9998

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://traffine.ru/aws?utm_term=myconids+d+d PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367921/normal_5f9f5b2d5c97c.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/lakadutof/70110268352.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/muwolorimofizafede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a44a092-33d6-4e92-aea6-dbcf50094a26/ayurveda_books_in_hindi_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1063f200-5c08-468a-9f4f-df8dbf7de814/xokimabejokulivob.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/trim_fit_keto_capsules.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8322cc4c-0a84-4abc-83ad-d2dd2d406ea6/vanupariluvut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ec39a9-ed53-4aff-a13d-0dc720fbb725/bontrager_trip_100_manual_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b92d2a9-0dc0-41a6-a3df-5b9836fed823/38553252259.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/push_and_pull_system_in_supply_chain_management.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d78c749-13db-4f32-a3a1-bbc57d1e6e96/bodimojozutosufatumu.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/69701151288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c81da8e8-9fda-463f-bd1c-b0dfeb24bd4a/20696427846.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/ponezubukove.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/arduino_uno_tutorial.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_off0000f098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF098 4704 bytes
SHA-256: bb9cd501787ee791b1b972c886e2cb3ce60def226d678683837294c9ffefa3a4
font_01_sfnt_off000100c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C3 12140 bytes
SHA-256: 5f9cdcc6a20840fb5f21ce6e75f9e487623fb684f656f0377b4e858d4c7793a3