Malicious PDF — malware analysis report

Static analysis result for SHA-256 32128873fdd49f25…

MALICIOUS

PDF

78.3 KB Created: 2021-03-01 13:34:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2cd5d82d9dd63022d67aa46551d79d63 SHA-1: a486fbde2745cf5d72dc5fa1781b671f7f38a909 SHA-256: 32128873fdd49f25247ba4094f95569519ae635b7732d7897594e6ce1d72aa23
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://nipisod.ru/award?keyword=carl+jung+quotes PDF link annotation
    • http://fafuzum.sportsontheweb.net/61833715048.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460446/normal_5fdb643c16731.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/RZidjgX/nolexapudafatidubabomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445879/normal_602a56dac4f2a.pdfIn PDF document text
    • http://sewukagazub.mypressonline.com/ryze_tello_gamesir_t1d_drone_controller.pdfIn PDF document text
    • http://fukerijinexin.mygamesonline.org/65649313134.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/1b48a94c6f607f1.pdfIn PDF document text
    • https://kowagazobavov.weebly.com/uploads/1/3/0/8/130874359/ruworiwiditowowuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464539/normal_602ee4987083a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427504/normal_6008983c042e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466680/normal_601f5c1516622.pdfIn PDF document text
    • https://cdn.sqhk.co/novigigexuxo/XiczijQ/battleship_game_android_studio.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459784/normal_5fc8652818174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372963/normal_5fda287ab5672.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kadoxosin.atwebpages.com/bokizusulivukun.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_off0000f88f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF88F 4960 bytes
SHA-256: eac76e536e72f81db78453588975e283321433868ebb84d083b77bcd2e628419
font_01_sfnt_off00010980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10980 10396 bytes
SHA-256: 91c6f7644afa6ca847fd3d30eb6b8ce6e038ce0f49edc994632028781359af73