Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e28a5bf43b010b…

MALICIOUS

PDF

72.6 KB Created: 2020-12-07 15:45:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: b8a70ef1c4c639c4b252d3032312e887 SHA-1: e8c5902fdcb434a056312f832df56db703680190 SHA-256: 19e28a5bf43b010b49342bc1da664e90e240ee9ae45311cb54c5436cd8aeb9dc
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URL that appears to be a lure for downloading software, indicated by the URL path and query parameters. The PDF structure and embedded content suggest it's designed to exploit user trust for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/aws?utm_term=beetle+bug+2+free++full+version PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4373999/normal_5fc6592fa3dcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421208/normal_5fa4ebe3d0e47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371788/normal_5f93d684df1e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417413/normal_5fa37159e7d20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390330/normal_5f9e8f17187ac.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
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcef95cc750a3b5a04de20/1606217621988/kul_tiran_engineering_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18bbd0b6b03258f3a1e10/t/5fc694855147b14804193768/1606849685758/62589928302.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57f7f2bbd74065825a53a/t/5fc83d7292e74531f3c3eb8e/1606958452127/44370899697.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfba79d104e5f152dc7ff/1606220713074/zte_cymbal_z-320.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d49a16f6d44b07be6b5d/t/5fc20d9d18e72e5fdb1f14b4/1606552994570/ponuvosixamovujelap.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ea6ac6229360ecad0c46/t/5fc74115c953717e09d5a3ca/1606893847875/mirtazapine_drug_class_medscape.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6cca5e2afa34b64aa8fbb/t/5fcd5ecdf94b6402b22bf16c/1607294673658/stackable_washer_and_gas_dryer_home_depot.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_off0000d1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C5 4988 bytes
SHA-256: 00d8b15a22ee60743f9e7a4192bd1362afedc21c90694c1eb0276027680ac6a7
font_01_sfnt_off0000e2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DF 10636 bytes
SHA-256: bd45bcb11487d9773abb81c41f754068259f46442764cc9ae0a0b93fcbef1b4d
font_02_sfnt_off00010730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10730 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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