Malicious PDF — malware analysis report

Static analysis result for SHA-256 30cc04992dc08500…

MALICIOUS

PDF

96.3 KB Created: 2020-12-17 12:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 5f002e2dbb51680392d5ef4f6d23d04d SHA-1: 5c48367ba9293763c5c525b5939959eaa238060e SHA-256: 30cc04992dc085001536bccac256ff998f7205e2540e419012d17bba8b4b829e
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple critical heuristics as malicious, including a redirector link and a link farm. The embedded URLs point to external PDF files and a redirector, suggesting an attempt to lead the user to malicious content or phishing pages. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffmen.ru/strik?utm_term=open+enrollment+letter+to+employees+2019 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4463263/normal_5fcbb85e9fa0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369909/normal_5fcf7342b6026.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426556/normal_5fab779ea2be6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415754/normal_5f9d58a8838e1.pdfIn PDF document text
    • https://palozemoxapido.weebly.com/uploads/1/3/4/3/134366311/pizumuxifodiro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481510/normal_5fd11dfb6da7a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494166/normal_5fce135fa828b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373755/normal_5fc0f3d53d9dc.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/b67c04c0-6937-4bf8-916f-9235a5445c92/vunaneretumusoliworepif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19f63737-3327-46ad-b38e-5d7b4b3d283d/gilumifevijir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ee5afe1-bbda-4398-9c7a-9dda1da7ef7f/45644067064.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d9cdc14dfd36fe0adb20/t/5fc5bf313570fb44d1c9e706/1606795058597/dd_character_creation_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f6d8ead-0205-4555-ac2e-37841b1d610e/jedat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001334e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1334E 2828 bytes
SHA-256: 4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
font_01_sfnt_off00013d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D49 5368 bytes
SHA-256: 6e9c96e17eb568ef45d4818711f40bd25aacc08f82a142b9a82e125245cc7f29
font_02_sfnt_off00014f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F79 10072 bytes
SHA-256: de4d6c62bfc0868043523e5da3600ed48f60cafd5c25502ea1658e0e203f0d5f

Open this report in the interactive analyzer, or submit your own file for analysis.