Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f04d29bba402f47…

MALICIOUS

PDF

72.0 KB Created: 2021-02-24 07:25:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 65f83b67af2c539cafe5d541b216e55a SHA-1: 34a92a896112541d0d6c3fb58f52bf89d8b6054a SHA-256: 9f04d29bba402f471621b47c93786b10d9ad0911fbc9f49e0d150b3296e7f18a
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=the+power+by+naomi+alderman+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4496811/normal_600a4a1e3051f.pdfIn PDF document text
    • https://jaxoruxevag.weebly.com/uploads/1/3/1/6/131606876/3758483.pdfIn PDF document text
    • https://wapojopaboxijok.weebly.com/uploads/1/3/4/7/134747084/xosixolanegotep_jodasu_denawudo.pdfIn PDF document text
    • https://cdn.sqhk.co/sijiposago/fqtgiij/ziradufopedilebagusiroro.pdfIn PDF document text
    • https://jalusuduzewot.weebly.com/uploads/1/3/1/4/131456012/1967037.pdfIn PDF document text
    • https://totaguzoxexidi.weebly.com/uploads/1/3/2/7/132741029/verevoronix_depasakodog_sapupab_nimuwapaxideka.pdfIn PDF document text
    • https://cdn.sqhk.co/wefenilu/dN8gfhc/navekatow.pdfIn PDF document text
    • https://cdn.sqhk.co/fopikudapom/U0R17jj/27079947883.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370317/normal_600f14cf3aaa4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380701/normal_6033991ae1479.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/jjjfnbe/99626346993.pdfIn PDF document text
    • http://xedowoduwonaf.iblogger.org/mijinoz.pdfIn PDF document text
    • https://buvonumonub.weebly.com/uploads/1/3/5/3/135304713/4165234.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xoxuvenopojox.rf.gd/10040441582.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/virivuxiw.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/62645712716.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/2522984450.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/kudujuxagumawesijaxoxot.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_off0000de8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8E 5384 bytes
SHA-256: 3597aa99ff9ef4364ab6661af849d0ab0fb34e6862fea6cf0a622b032de69c29
font_01_sfnt_off0000f0c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C4 10000 bytes
SHA-256: 23fcb3fdf4e135eda8bef3dcf1c8b502372c975f1559982fa285427d6d1d4edf

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