Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a182bfcf9b30d52…

MALICIOUS

PDF

69.3 KB Created: 2020-11-18 01:54:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 250f63d1a8d6778b94d33b390ab16013 SHA-1: 263b5115212f0da1f762d402c22be2a124c2b506 SHA-256: 3a182bfcf9b30d52c42fd76bbc17cc5a550f41bec8e5e1a888c44af488db64ef
96 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 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://trafftec.ru/123?utm_term=dc+universe+online+feats+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368770/normal_5f96b62148880.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401994/normal_5f97e9d4a6084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5f913cfa7b5ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404308/normal_5f999f2370650.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367925/normal_5f9ad3121a712.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473902/normal_5fa67a25a483d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464709/normal_5fa5f634c28cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416327/normal_5f969f7b9c073.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/fb44254b-80c9-4f5e-9008-c3f98acae989/68392729848.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/53214376646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9e758ce-78e5-439f-9926-4c62ead847de/fafiralabasevizegufun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d027f1ea-2e23-4516-9a4a-be4110b7cea0/bimefi.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/lg_chiller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b22460c-8b15-43ba-869c-3139a95eceea/39178956777.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47b7da87-7333-4225-8e1e-78aa4b084364/14837796797.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_off0000d3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D7 5248 bytes
SHA-256: 90c73bd4b2b870000d8d4ab45758db160f023f52a8f7fb4ecb9ff810ad650edc
font_01_sfnt_off0000e5d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D0 10068 bytes
SHA-256: 6b8e9bfeae6657b2a156c1624a20a7db0bdf03325d44dd2df3fcb11ccc312a4f

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