Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc22ae3e876825da…

MALICIOUS

PDF

69.6 KB Created: 2021-02-11 17:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ae4ca0b80033183f58806c774d307672 SHA-1: 4d201b4389300aede3a764a9792a34c49a2f7215 SHA-256: cc22ae3e876825dadd425b3eda93b48c6fd02650a25cb6d1bbbc37216934bf41
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=elements+compounds+and+mixtures+webquest+answers PDF link annotation
    • https://vafunaparixidi.weebly.com/uploads/1/3/4/6/134627598/fabd00.pdfIn PDF document text
    • https://mawetifatine.weebly.com/uploads/1/3/2/6/132683292/70d1b1a3c238e.pdfIn PDF document text
    • https://cdn.sqhk.co/pusuvizodez/rIz0hiH/difezuv.pdfIn PDF document text
    • https://sazefowefojewen.weebly.com/uploads/1/3/4/8/134893887/5304f08f.pdfIn PDF document text
    • https://cdn.sqhk.co/potonefamuve/TjherME/bufinele.pdfIn PDF document text
    • http://blockhcain.host/64879627261t36n9.pdfIn PDF document text
    • https://guxofoxevi.weebly.com/uploads/1/3/4/7/134737998/78539c7e4c5c6f3.pdfIn PDF document text
    • https://cdn.sqhk.co/balapakufogo/0jfrXii/real_carrom_3d_mod_apk_2._3._6.pdfIn PDF document text
    • http://buzatukati.iblogger.org/cohn_certification_study_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/tasiteregixo/jgUoYPA/38058494021.pdfIn PDF document text
    • https://tumafikajenama.weebly.com/uploads/1/3/5/3/135326798/8647770.pdfIn PDF document text
    • https://ronewomiz.weebly.com/uploads/1/3/0/8/130874064/timodebise_judok.pdfIn PDF document text
    • https://cdn.sqhk.co/fifapupifig/elbQWji/fegikowowewo.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/1Oqhcji/74752669748.pdfIn PDF document text
    • https://wiluxuvofox.weebly.com/uploads/1/3/0/9/130969019/a1becc9a5.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/drgeScn/vimaxafaboba.pdfIn PDF document text
    • https://kofaxikizija.weebly.com/uploads/1/3/4/3/134336932/pawetotaz.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/jizyU9v/wilixiluwojufezerexuniw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d23a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23A 5604 bytes
SHA-256: 4d8e270a68b56419e03fd08677ff7b0420a3c618bd6f0816177be0be1f1283ff
font_01_sfnt_off0000e53c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53C 10364 bytes
SHA-256: 97b306312995fcaef6373616e6a058ba66595e0be6d58c08d9a514ebe1a8aa3f