Malicious PDF — malware analysis report

Static analysis result for SHA-256 882d287ba60df93c…

MALICIOUS

PDF

68.4 KB Created: 2020-11-19 06:45:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e3f9f9f734e1a4188151023bc4a89a94 SHA-1: 20d988fb781ed754a027fd5ee4d134117e311a25 SHA-256: 882d287ba60df93c029c96591b432f765f70d8e25ab82aefbf840244c1cbf4ca
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to 'Chhattisgarhi song 2019', suggesting a lure to trick users into visiting the malicious URL.

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://traffnew.ru/aws?utm_term=chhattisgarhi+song+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417519/normal_5fb3364fd5fe0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368972/normal_5f87d4d50e178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5faf30ec39559.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383702/normal_5fa29c9020468.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5f8d18859b15f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418762/normal_5fa509f661191.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5f90a5b575890.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/64552537-f2df-47d9-9d8f-47344a54bcfb/download_gamebryo_engine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e63cfcd-e1f1-49b5-b7bf-beb33329f86d/85796494376.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5129db1e-b89c-4bf1-875a-dd70a1d5d0c8/billy_bob_space_trucker.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/algebra_formulas_for_ssc_chsl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c385cdf-24bb-45e1-93e2-4916f1471501/cuphead_on-line_hamachi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54df75f2-d54d-4e81-b133-1f2f4d7d4a38/77262437216.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c1380dd-740b-401b-9fbf-9d99e027247c/2006.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_off0000cd29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD29 5304 bytes
SHA-256: 0e94bea7f79308c028f989072c5ba82bbed255dabab0cc6ceb5fa937e75fb8f2
font_01_sfnt_off0000df25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF25 11916 bytes
SHA-256: 5edd5b328ba96060b2a4cd995f12c8afa05b859df1beee569aceabd406e0b90b

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