Malicious PDF — malware analysis report

Static analysis result for SHA-256 099949956e074f2f…

MALICIOUS

PDF

91.3 KB Created: 2020-12-20 02:30:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a81f7d458d8bf7d2d78afc659a29dfc9 SHA-1: c8daf3179c5bd7e7be8035714dfc5fc9f88cce26 SHA-256: 099949956e074f2f896db23b65409d49b7f3c1017b125240daafadd2f2331637
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical detection score. It contains an embedded URI pointing to 'traffking.ru', which is a strong indicator of malicious intent. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'aqw best classes 2019'. The presence of an external URI suggests an attempt to redirect the user to a potentially harmful site.

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://traffking.ru/strik?utm_term=aqw+best+classes+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368763/normal_5fd2421fc1768.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369916/normal_5fb8c6864f2b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371814/normal_5f926bb0b7dbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486763/normal_5fc0bc8fec86d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367013/normal_5fc4bb765ed4a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/address_bus_data_bus_control_bus.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/revawonobaparap.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/2870828949.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/31290923993.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a167cd1e280355df4762/t/5fc6e02a0623334b0c4fa154/1606869036430/archer_hotel_florham_park.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/83577313972.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5475712facd59cec9dbbd/t/5fca0bf2d7c3040d87373b4e/1607076850653/lonevolutumo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50833d49dd124474ed35a/t/5fc82b53ee804a17a1c73090/1606953812006/kahootz_fashion_plates_deluxe_kit.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_off000128cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128CC 5524 bytes
SHA-256: 9e611a95ae977a2e0794ec3208bbe92a743af66208b659b8f7df859afa574b6d
font_01_sfnt_off00013bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BC2 10908 bytes
SHA-256: cc01fc6fb13be8dd320be28faf836d74bd8e03d94438ee31be025648f38553e5

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