Malicious PDF — malware analysis report

Static analysis result for SHA-256 a76dcea9f216d1c1…

MALICIOUS

PDF

68.5 KB Created: 2021-06-05 14:03:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2fef55c045f0af1ad9f121293b93f936 SHA-1: e285048539f5160c0e82fa08575e3f53f561c815 SHA-256: a76dcea9f216d1c1c08f19cc50d25cca54e6f1fa8b29cd1afc566e8051e54789
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of an external URI and the overall classification suggest the document is designed to trick users into visiting a malicious 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://synerhu.ru/pbw?utm_term=how+to+adjust+a+mower+deck+john+deere PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4456982/normal_5fe4c625a92ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374535/normal_600379af31bc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483864/normal_60207557d6ce8.pdfIn PDF document text
    • https://gowapatemik.weebly.com/uploads/1/3/5/3/135319450/vakika.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503524/normal_60008a73b528e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422914/normal_6004c2443639c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418796/normal_5ffe99693f5a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481166/normal_5fc887490d3c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377391/normal_6022339c2eaca.pdfIn PDF document text
    • https://xelavizagak.weebly.com/uploads/1/3/5/3/135325118/vulavefusatenut-kiloful-xobopidem-vijozugowugurot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413735/normal_5fcb9d2b578ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385435/normal_605ef76569ed8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389571/normal_6056bc7f564f6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jolowajuwijo.pbworks.com/f/57143516079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af9011b5-4916-4148-8887-e23cd3dd989b/fiche_de_paie_vierge.pdfIn PDF document text
    • http://nosiravuga.pbworks.com/f/jabawobebemolutedumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d59e4393-48c8-4318-8b19-8d515c6a8683/how_to_have_a_good_relationship_with_your_sons_girlfriend.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76f1baa2-33b7-44f6-b550-0afe6c3c95a5/polejusapenokal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb187e2f-a604-4bc8-b6e9-e40abe51173a/hp_laserjet_p1606dn_specification.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_off0000d142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD142 5340 bytes
SHA-256: 219c6dce548045ea98b008b851bdff75185bd8b62d84c1320225cb975472a1ef
font_01_sfnt_off0000e34e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34E 9836 bytes
SHA-256: 50157b81189a57309a0ad82b53e8948e5600731b70ccc4f9fb8dafb3dd709e34

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