Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07161a363ac8eb4…

MALICIOUS

PDF

66.7 KB Created: 2021-02-13 17:13:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7b973db7b9d1c382f9ba41279157cf1b SHA-1: 456f9d6339f7fb66426414ef16723d7e43570f40 SHA-256: d07161a363ac8eb4a6c0191b26abd6b2ec4b9b3c34f9a50f3e74840de0af7466
184 Risk Score

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/wix?keyword=5.10+anasazi+guide In PDF document text
    • https://cdn.sqhk.co/jezuleku/iacrjbZ/posorefezereruxagezeb.pdfIn PDF document text
    • https://ginupegoforijef.weebly.com/uploads/1/3/4/7/134760486/16c8d86b1.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/ghhdTki/kubusevez.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/ijXijWa/47132120253.pdfIn PDF document text
    • http://sidegut.22web.org/vaxeloz.pdfIn PDF document text
    • https://wiwazojuxosupud.weebly.com/uploads/1/3/1/3/131379189/495d16abbe8d9.pdfIn PDF document text
    • https://dapalijika.weebly.com/uploads/1/3/0/7/130738969/lugojitoda-zerif-kefisafak-pipiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413223/normal_5ffc39b6a316f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483103/normal_60214e465d5f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_601d9b444d165.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379355/normal_6007c9be33508.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417990/normal_60038f0893b73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_600c8fe427e00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415045/normal_5fe8975d0eabd.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/c2eVkqh/33554960038.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://muwodanodobe.rf.gd/juvujom.pdfIn PDF document text
    • http://terujak.epizy.com/ruxotopig.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_off0000c862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC862 5172 bytes
SHA-256: 00067d97b51aaa2e46fac1e87a1f3cb022b4117a72cbe9cc321db98b515e366a
font_01_sfnt_off0000da22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA22 10548 bytes
SHA-256: 90233b2c60bfedb8fd8c02b1115f7d488c1f26faca2ecd067594443753485e43