Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d40b9764f7712d…

MALICIOUS

PDF

64.5 KB Created: 2021-01-08 17:42:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6697c3eb6a55e34c35714441671ce85e SHA-1: d04c599bebd2e5eabc6f615ce98d355e9dd1ca15 SHA-256: 36d40b9764f7712dcbcf0e2525568a0a8e8eb2af10f832f1faf9231e03a0c3b0
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, which is a strong indicator of malicious intent, likely to deliver a payload. The ML classifier and ClamAV detection further support this assessment. The embedded link suggests a phishing or social engineering attack aimed at tricking the user into downloading a file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/aws?utm_term=game+studio+tycoon+3+apk+full+version In PDF document text
    • https://junenewawaxi.weebly.com/uploads/1/3/1/4/131407408/e1554c1aa9818.pdfIn PDF document text
    • https://mixosikopas.weebly.com/uploads/1/3/4/3/134383158/3c711f5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375531/normal_5ff4da34318ea.pdfIn PDF document text
    • https://jurivulanikep.weebly.com/uploads/1/3/4/5/134525456/d6bf7402f0.pdfIn PDF document text
    • https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/6542864.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472506/normal_5fde05011d5d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463002/normal_5fa4edd0cb2b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f871e3edb4f7.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/31924a04-a30d-47f3-b7b3-b5cfae48f2fb/86925390649.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8ab74ca-a598-4f67-9aa9-c03b10f1abac/quitclaim_deed_texas_sample.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_off0000bf74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF74 5720 bytes
SHA-256: c5fe6b2baff3e610f78cddf05d5bd732ed6c0b872639516ceb183c838d0386a1
font_01_sfnt_off0000d2f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F7 10172 bytes
SHA-256: 2ae2aa1666db979e0611c2424cc9367db421353ce3c43699b561f9b846e77a48