Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a6630727ae7bde5…

MALICIOUS

PDF

70.4 KB Created: 2020-12-10 14:40:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ac707c76bca629f30e43a1fbb5556d4d SHA-1: 15898b396a947435605078a046ba69c984f9a69f SHA-256: 5a6630727ae7bde522318a60e695d204b92d6c311095d50b89cc640338bc3a68
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that redirects to a suspicious domain. The document body, though heavily obfuscated, appears to contain text related to cooking, which is likely a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=how+to+cook+deer+sausage PDF link annotation
    • https://moxuronanupew.weebly.com/uploads/1/3/4/5/134597487/4921615.pdfIn PDF document text
    • https://rimofunoduw.weebly.com/uploads/1/3/4/5/134525219/kawidebu_bolalabofuda.pdfIn PDF document text
    • https://xuxefakeni.weebly.com/uploads/1/3/4/2/134234722/pusawapepirofupib.pdfIn PDF document text
    • https://gazofifato.weebly.com/uploads/1/3/4/4/134496451/sinunipojonexiwamuw.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/2f95c6e8-0b77-4ab4-b1ba-f3b33f521ec1/calculating_area_of_compound_shapes_worksheets.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dde4403f5353fd9590af/t/5fc170d83c6ccf69f3947813/1606512857424/2215642616.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65c4a6609fd0ee7b6cb70/t/5fc7062a7995075abdd9a60a/1606878763169/43238246347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efc026be-9e95-4496-9b12-7c6c6524d7b1/my_download_speed_is_in_the_kilobytes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf12d3ca23154c95a3c8b/1606218029758/horizon_walker_5e_multiclass.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc504c07848ba205d332f1e/t/5fc9a2ec6a94db17e48c2fe8/1607049966481/space_warship_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5792c5a-cffb-4915-925f-72ccc47c2a96/15220488101.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc557cb3398ff75154b585a/t/5fcd1f0c3ff1011540f8d98c/1607278353555/27994663937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9ed5497-8943-44cb-978a-bb583cf4e76f/plants_of_the_gods.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_off0000d700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD700 5192 bytes
SHA-256: bbfddf6ddb775dfed2bb809de65376be84d6c40064e931abadfda8fa437142cf
font_01_sfnt_off0000e8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CC 10680 bytes
SHA-256: 265ede121e63ea47b9fddbdb30aee5f5e29756b6f041529800eb185d9a123138

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