Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a9c756cbb78fb8e…

MALICIOUS

PDF

79.0 KB Created: 2021-02-11 08:05:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e27dce12f03ba91ab87be6bd60a8072c SHA-1: 0fa9f651534987a1c906c91577a08b8923ae9240 SHA-256: 8a9c756cbb78fb8eeb74f4aed669b733fb76d37ed14a26f712996bd8861efd4e
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://yafferge.ru/wb?keyword=android%20rear%20view%20mirror%202019 In PDF document text
    • http://ttttrrrr.space/a_link_to_the_past_full_mapajrhj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453532/normal_5ffe53986dc69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426260/normal_5ff6127be7395.pdfIn PDF document text
    • http://myfirstsite.xyz/debut_video_capture_full_version_crackehct0.pdfIn PDF document text
    • http://magic-spring.com/libro_vida_saludable_sep_4_gradow4nnc.pdfIn PDF document text
    • http://vekogevev.22web.org/98050259950.pdfIn PDF document text
    • https://womolikusewafok.weebly.com/uploads/1/3/0/9/130969044/satizagu.pdfIn PDF document text
    • https://cdn.sqhk.co/xewumoxu/gcHt9SC/66706189114.pdfIn PDF document text
    • http://erethiztzj.space/xegusoomszf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_600bc1dd45f02.pdfIn PDF document text
    • https://mifopubulu.weebly.com/uploads/1/3/1/6/131637027/wumefuzowe_mimaguf_rolemixujod.pdfIn PDF document text
    • http://lnstagramsupportinfo.com/45939947769x739q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lojiwifi.epizy.com/pes_17_android_version.pdfIn PDF document text
    • http://nerelikeg.epizy.com/gwent_arena_guide.pdfIn PDF document text
    • http://lewamomad.epizy.com/keytool_export_cert_pem_format.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_off0000f92e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF92E 5384 bytes
SHA-256: 39330c9cce9d20f25d0437180576cd796fa7196413f737b4a198d3870443aba2
font_01_sfnt_off00010b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B82 10572 bytes
SHA-256: 17e1dfe3e480c8ef7e9846eaba1596482dde7fbb0212a0b9a5591bc58e548aaa