Malicious PDF — malware analysis report

Static analysis result for SHA-256 0266ec8f2c9599c5…

MALICIOUS

PDF

66.3 KB Created: 2020-12-19 10:40:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e4a81e05167cb0c1931f6689c0f807c7 SHA-1: 428a0131945f3ceae0eb8be449655529cc3be58f SHA-256: 0266ec8f2c9599c5e8a9e2f24d234c802e46beeda9a1abb26cf5eb6517284d91
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 0.9997

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=brusa+charger+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453575/normal_5fa6418481566.pdfIn PDF document text
    • https://zanasebumafuwaj.weebly.com/uploads/1/3/4/8/134899829/ca0a07d8d642d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480589/normal_5fd91480bdad4.pdfIn PDF document text
    • https://ximinelinax.weebly.com/uploads/1/3/4/3/134313791/2a86fc555b026.pdfIn PDF document text
    • https://vogoworelo.weebly.com/uploads/1/3/4/2/134266182/dutiteguzalubi-safak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379371/normal_5fa7827f3dabc.pdfIn PDF document text
    • https://luvepuxoworusoj.weebly.com/uploads/1/3/4/6/134660421/kodinukiwekijobafis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd022ec7afe470b5571fa7/1606222386844/vurenenanevokasekof.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f7f0c6d9645836228a25/t/5fc9eee3e262c0159465c58b/1607069414167/within_the_ruins_black_heart_release_date.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56cb79955c744b559bb78/t/5fc6d5287995075abdd0de0d/1606866217451/weketano.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/afmc_2018_question_paper.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000adbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADBB 5264 bytes
SHA-256: 16d31e9fa26ce3db200c06122b42a3a4a8fe1565eab3f534b208dccfecaef40a
font_01_sfnt_off0000bf74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF74 12132 bytes
SHA-256: 8a880270fd4fdcf0fed21c5fe9c9133e0137d89b9d502272673dd0e423995518
font_02_sfnt_off0000e67f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67F 16076 bytes
SHA-256: 04ed9a115df4ecef650698b3dd8381d22f66c48d95aa0ba78bcd8ddb0c240563

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