Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d670cb8e9c60e2e…

MALICIOUS

PDF

67.2 KB Created: 2021-02-18 14:26:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2f37c30039d5b1f472ecd39a7c5beeba SHA-1: 51116544b0c2bb9de9bcb9a40803a3de87b96e78 SHA-256: 2d670cb8e9c60e2ef3383e6aedd37a253a26f6ca33d413039d94dcabf56a6f42
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://jottigo.ru/wix?keyword=spanish+stem-changing+verbs+practice+worksheets PDF link annotation
    • https://femowoziso.weebly.com/uploads/1/3/1/3/131398515/fafigor_balaxe_dosevofapofim.pdfIn PDF document text
    • https://gesuveta.weebly.com/uploads/1/3/2/6/132680901/kuwumubetox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403681/normal_5fcdfa402f2fc.pdfIn PDF document text
    • https://muxapikaw.weebly.com/uploads/1/3/5/3/135346573/6018904.pdfIn PDF document text
    • https://rijifupipi.weebly.com/uploads/1/3/1/4/131453414/pexapexe.pdfIn PDF document text
    • http://dawajilimomod.iblogger.org/berozufoj.pdfIn PDF document text
    • https://sujolatako.weebly.com/uploads/1/3/4/6/134624807/lufiriz-zubasutifuvim.pdfIn PDF document text
    • https://gidaletibom.weebly.com/uploads/1/3/4/8/134881461/6741454.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485448/normal_5fd0b816d5284.pdfIn PDF document text
    • http://jibuwuxopi.22web.org/aceite_esencial_de_albahaca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500417/normal_6014ec7a70f36.pdfIn PDF document text
    • http://lopozodedawap.22web.org/limopu.pdfIn PDF document text
    • http://tesekitogibop.22web.org/how_to_shade_quadratic_inequalities_graph.pdfIn PDF document text
    • https://zudejuzire.weebly.com/uploads/1/3/2/6/132681250/napusik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jufosuliz.epizy.com/75990408513.pdfIn PDF document text
    • http://valapapiwusujeg.rf.gd/ditivezedeba.pdfIn PDF document text
    • http://sasaroguri.rf.gd/75582242552.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_off0000c757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC757 5804 bytes
SHA-256: 72990634be8d0d04b839c533c362f2d5875fb705fb944da11763abb4fec32801
font_01_sfnt_off0000db0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0F 10876 bytes
SHA-256: 6c38181c832c869384b082a113fceecc3063f15312acf1647dbcda6a9db24461