Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc45ea2fe96da54d…

MALICIOUS

PDF

77.6 KB Created: 2021-02-17 20:58:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 9d7a07d44117f1cd11a37fab868b2356 SHA-1: 6abee14c635fb5f4b26f77b7f8270293a35640d9 SHA-256: cc45ea2fe96da54d8913a7617d99056c12f9995fdef0c5422f47308ca4942773
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The PDF contains a large number of external links, suggesting a link farm or a distribution point for further malicious content. The embedded URLs and the PDF structure indicate a phishing or content manipulation attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/123?utm_term=what+kinds+of+conflicts+resulted+from+the+global+confrontation+between+the+two+superpowers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421944/normal_5ffe9a22e6c8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402481/normal_602884a530e85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444623/normal_5fe49a3048cfd.pdfIn PDF document text
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/621938.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376858/normal_600469ce9eac9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491169/normal_5ffb905109059.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461498/normal_5ff9392035890.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365584/normal_5fee339bd4c97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481527/normal_5ff0205ddca1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494868/normal_5fd86b2b50a84.pdfIn PDF document text
    • http://tomobufefiz.iblogger.org/telugu_movies_emotional_songs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457305/normal_5fdbbb4fb2ea1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446762/normal_60206892d87be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476288/normal_6020a051855fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386363/normal_5fdd9db4be090.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427523/normal_5fe4f0c243650.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://nadalapaxizo.epizy.com/euronext_stock_exchange_annual_report.pdfIn PDF document text
    • http://gadedeful.epizy.com/nightside_of_eden_therion.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24B 5760 bytes
SHA-256: 0e69c61d6d69e6189a4d9e3520b0a9e3c3b84e10966df681570d49373be3361d
font_01_sfnt_off0000f5bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BD 10524 bytes
SHA-256: 8779de604dc3818515f6379c2da3d17c31ce0784c10049ca36fc648167cd2ebd
font_02_sfnt_off000119a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119A2 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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