Malicious PDF — malware analysis report

Static analysis result for SHA-256 593faa526e2e6217…

MALICIOUS

PDF

66.8 KB Created: 2021-02-18 18:15:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 63d1f88577b1681e367ad417711c04fa SHA-1: 457d024168bf1519648fad1cf81a9c62c59aea2a SHA-256: 593faa526e2e621741a08c428a957e69a62c7da947f9f9152ed637b4db15c3c0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • 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://leonvi.ru/wix?keyword=launching+the+imagination+4th+edition+pdf+free PDF link annotation
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/8097655.pdfIn PDF document text
    • https://fuwosijeven.weebly.com/uploads/1/3/0/7/130738701/sivubakikinumekomija.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368949/normal_5fc88e01b40e9.pdfIn PDF document text
    • https://ridimejaxokixis.weebly.com/uploads/1/3/5/3/135340331/gilibuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501989/normal_602387f35e4e0.pdfIn PDF document text
    • https://rodagekutav.weebly.com/uploads/1/3/5/3/135313742/xigoriseg_fuwifiwis_joramajibamudi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427282/normal_600fa59d55e4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454809/normal_5fe23ed2206b2.pdfIn PDF document text
    • https://xewaxegixu.weebly.com/uploads/1/3/0/7/130739020/7359547.pdfIn PDF document text
    • https://cdn.sqhk.co/munuluxel/agcgjhd/map_of_uk_and_european_union.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/zibaxituwitowomo.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/neuralgia_del_trigemino_elsevier.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/net_master_speed_test_app.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_off0000ca5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA5D 5388 bytes
SHA-256: e885febb5e7d6dfc6b808508b9c7df6de455e0b507e9a85eb0eb261f2a28797d
font_01_sfnt_off0000dc91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC91 9940 bytes
SHA-256: 033a6d4cfd79a2096434e05a7f9d4668f9307a4146aaf15541430d65d8716210